['CITEREFNock1974'] = {'Nock-EustonGlasgow'},  
----------< O >----------
['CITEREFO&#039;Byrne1849'] = {'Cite NBD1849'},
['CITEREFO&#039;ConnorRobertson1996'] = {'MacTutor Biography', 'MacTutor'},
['CITEREFO&#039;ConnorRobertson2000'] = {'MacTutor Biography', 'MacTutor'},
['CITEREFO&#039;Donoghue1897'] = {'Cite DNB'},
['CITEREFODB'] = template_names['ODB'],
['CITEREFODLA'] = template_names['ODLA'],
['CITEREFOberling1984'] = template_names['Iranica'],
['CITEREFOberling2008'] = template_names['Iranica'],
['CITEREFOberling2010'] = template_names['Iranica'],
['CITEREFOdisheli2018'] = template_names['ODLA'],
['CITEREFOfficial_Guide_of_the_Railways1950'] = {'Official Guide of the Railways'},
['CITEREFOgorek2012'] = {'Ogorek-South Shore'},
['CITEREFOikonomides1991'] = template_names['ODB'],
['CITEREFOikonomou1977'] = {'Ιστορία του Ελληνικού Έθνους'},
['CITEREFOlbrycht2021'] = template_names['Iranica'],  
----------< P >----------
['CITEREFPLP'] = {'Prosopographisches Lexikon der Palaiologenzeit', 'PLP'},
['CITEREFPalmer1875'] = {'Cite ADB'},
['CITEREFPalmerStewart1965'] = {'Palmer & Stewart'},
['CITEREFPanainoAbdollahyBalland1990'] = template_names['Iranica'],
['CITEREFPandariHirtensteinNegahban2013'] = {'Encyclopaedia Islamica'},
['CITEREFParvin2003'] = template_names['Iranica'],
['CITEREFParvin2009'] = template_names['Iranica'],
['CITEREFPatience1996'] = {'Patience-SteamTwilight'},
['CITEREFPatton2005'] = {'MSW3 Geomyidae'},
['CITEREFPaul2000'] = template_names['Iranica'],
['CITEREFPawson1979'] = {'Pawson-Delaware Valley'},
['CITEREFPaxtonBourne1985'] = {'Paxton-Bourne'},
['CITEREFPeacock2011'] = template_names['Iranica'],
['CITEREFPeck1898'] = {'HDCA'},
['CITEREFPerlis2001'] = {'Springer'},
['CITEREFPerreault2004'] = {'Bach\'s compositions (sources)'},
['CITEREFPerry1983'] = template_names['Cam_Hist_Iran'],
['CITEREFPerry1990'] = template_names['Cam_Hist_Iran'],
['CITEREFPerry1991'] = template_names['Cam_Hist_Iran'],
['CITEREFPetropoulosKoumarianou1977'] = {'Ιστορία του Ελληνικού Έθνους'},
['CITEREFPetrucci1982'] = {'DBI'},
['CITEREFPezeshk2017'] = {'Encyclopaedia Islamica'},
['CITEREFPezeshkKhaleeli2017'] = template_names['Iranica'],
['CITEREFPezeshkKhaleeli2017'] = {'Encyclopaedia Islamica'},
['CITEREFPfau2008'] = {'Bach\'s compositions (sources)'},
['CITEREFPinkepank1973'] = {'Pinkepank diesel spotters guide 2'},
['CITEREFPlantlist2016'] = {'Plantlist'},
['CITEREFPlaten1976'] = {'Bach\'s compositions (sources)'},
['CITEREFPloumidisAlexiou1974'] = {'Ιστορία του Ελληνικού Έθνους'},
['CITEREFPmbZ'] = {'Prosopographie der mittelbyzantinischen Zeit', 'PMBZ'},
['CITEREFPolemis1968'] = {'Polemis-The Doukai'},
['CITEREFPope2007'] = {'Encyclopaedia Judaica', 'Cite EJ', 'Cite Encyclopaedia Judaica'},
['CITEREFPopplewell'] = {'Popplewell-Gazetteer'},
['CITEREFPotts2018'] = template_names['ODLA'],
['CITEREFPottsCanepa2018'] = template_names['ODLA'],
['CITEREFPourshariati2017'] = {'Encyclopædia Iranica Online'},
['CITEREFPozza1992'] = {'DBI', 'Dizionario Biografico degli Italiani'},
['CITEREFPrawer1985'] = {'Setton-A History of the Crusades'},
['CITEREFPritsak1991'] = template_names['ODB'],
['CITEREFProsopographie_der_mittelbyz._Zeit'] = {'Prosopographie der mittelbyzantinischen Zeit'},  
----------< Q >----------
['CITEREFQuick2009'] = {'Quick-Stations'},
['CITEREFQuick2019'] = {'Quick-stations-5'},
['CITEREFQuick2020'] = {'Quick-stations-5'},
['CITEREFQuick2022'] = {'Quick-stations-5'},
['CITEREFQuinn2003'] = template_names['Iranica'],  
----------< R >----------
['CITEREFRaditsa1983'] = template_names['Cam_Hist_Iran'],
['CITEREFRahman1983'] = template_names['Iranica'],
['CITEREFRaja&#039;i1987'] = template_names['Iranica'],
['CITEREFRamaer1974'] = {'Ramaer-SteamLocosEAR'},
['CITEREFRansome-Wallis1971'] = {'Ransome-Wallis 1'},
['CITEREFRateliff2007'] = template_names['ME-ref'],
['CITEREFRavegnano2000'] = {'DBI'},
['CITEREFReed1953'] = {'RCTS-LocosGWR-2'},
['CITEREFReed1975'] = {'Reed-Streamline era'},
['CITEREFReed1997'] = {'Schubert\'s compositions (references)'},
['CITEREFReinhard_Tenberg1990'] = {'BBKL'},
['CITEREFRettinghaus2020'] = {'BDh'},
['CITEREFReynolds1921'] = {'Cite Collier\'s', 'Collier\'s'},
['CITEREFReynoldsOroszi2000'] = {'Reynolds-BO'},
['CITEREFRezaHirtensteinGholami2021'] = {'Encyclopaedia Islamica'},
['CITEREFRezakhani2018'] = template_names['ODLA'],
['CITEREFRezvani2014'] = template_names['Iranica'],
['CITEREFRichter-Bernburg2003'] = template_names['Iranica'],
['CITEREFRichter2018'] = {'BDh'},
['CITEREFRigo2005'] = template_names['ODB'],
['CITEREFRipleyDana1863'] = {'New American Cyclopedia'},
['CITEREFRipleyDana1864'] = {'New American Cyclopedia'},
['CITEREFRipleyDana1879'] = {'Cite AmCyc'},
['CITEREFRistaino1988'] = {'Country study'},
['CITEREFRobert_Eitner1891'] = {'Cite ADB'},
['CITEREFRobertson1983'] = {'Robertson-OriginScot'},
['CITEREFRoe1916'] = {'Roe1916'},
['CITEREFRoe1937'] = {'Roe1937'},
['CITEREFRoemer1986'] = template_names['Cam_Hist_Iran'],
['CITEREFRoemer1989'] = template_names['Iranica'],
['CITEREFRoemer2004'] = template_names['Iranica'],
['CITEREFRolt1965'] = {'Rolt1965'},
['CITEREFRoltKichenside1982'] = {'Rolt-Red'},
['CITEREFRose1857'] = {'Cite Newgenbio'},
['CITEREFRosenfeld1974'] = template_names['NDB'],
['CITEREFRosenzweigBlackmar1992'] = {'Cite Central Park History', 'Cite Central Park history'},
['CITEREFRowledge1975'] = {'Rowledge-Engines of the LMS'},
['CITEREFRowledge1993'] = {'Rowledge-Irish Steam Register'},
['CITEREFRowlett'] = {'Cite rowlett', 'Cite Rowlett'},
['CITEREFRowlett2007'] = {'Cite rowlett', 'Cite Rowlett'},
['CITEREFRowlett2012'] = {'Cite rowlett', 'Cite Rowlett'},
['CITEREFRowlett2013'] = {'Cite rowlett', 'Cite Rowlett'},
['CITEREFRowlett2016'] = {'Cite rowlett', 'Cite Rowlett'},
['CITEREFRowlett2017'] = {'Cite rowlett', 'Cite Rowlett'},
['CITEREFRowson1998'] = template_names['Iranica'],
['CITEREFRudin1973'] = {'Rudin Walter Functional Analysis'},
['CITEREFRudin1991'] = {'Rudin Walter Functional Analysis'},
['CITEREFRunciman1951'] = {'Runciman-A History of the Crusades'},
['CITEREFRunciman1951–1954'] = {'Runciman-A History of the Crusades'},
['CITEREFRunciman1952'] = {'Runciman-A History of the Crusades'},
['CITEREFRunciman1954'] = {'Runciman-A History of the Crusades'},
['CITEREFRunciman1989'] = {'Runciman-A History of the Crusades'},
['CITEREFRussell1985'] = {'Setton-A History of the Crusades', 'Encyclopædia Iranica Online', 'Encyclopædia Iranica', 'Encyclopaedia Iranica', 'Cite Encyclopædia Iranica Online'},
['CITEREFRussell1986'] = template_names['Iranica'],
['CITEREFRussell1987'] = template_names['Iranica'],
['CITEREFRussellNorvig2003'] = {'Russell Norvig 2003'},
['CITEREFRybczynski2000'] = {'Rybczynski2000'},
['CITEREFRypka1968'] = template_names['Cam_Hist_Iran'],  
----------< S >----------
['CITEREFSR_staff2013'] = {'Houston family tree'},
['CITEREFSadeghiTehrani2008'] = {'Encyclopaedia Islamica'},
['CITEREFSadıkoğlu1996'] = {'TDV Encyclopedia of Islam'},
['CITEREFSafa1987'] = template_names['Iranica'],
['CITEREFSafa1988'] = template_names['Iranica'],
['CITEREFSafa1989'] = template_names['Iranica'],
['CITEREFSafa1994'] = template_names['Iranica'],
['CITEREFSafa2003'] = template_names['Iranica'],
['CITEREFSajjadiAsatryanMelvin-Koushki'] = {'Encyclopaedia Islamica Online'},
['CITEREFSajjadiAsatryanMelvin-Koushki'] = {'Encyclopaedia Islamica'},
['CITEREFSajjadiAsatryanMelvin-Koushki2021'] = template_names['Iranica'],
['CITEREFSalbiev2021'] = template_names['Iranica'],
['CITEREFSalo2004'] = template_names['ME-ref'],
['CITEREFSamiʿiMelvin-Koushki2013'] = {'Encyclopaedia Islamica'},
['CITEREFSanders1998'] = {'The Cambridge History of Egypt', 'Cambridge History of Egypt'},
['CITEREFSanders2003'] = {'Sanders-Indiana'},
['CITEREFSanders2006'] = {'Sanders-Heartland'},
['CITEREFSanders2007'] = {'Sanders-Akron'},
['CITEREFSarikakis1974'] = {'Ιστορία του Ελληνικού Έθνους'},
['CITEREFSaunders2001'] = {'Saunders-Merging Lines'},
['CITEREFSaunders2013'] = {'Saunders-Giants of the Seas'},