היסטוריה של השעונים
לקריאה נוספת

Alder, Ken (2002). The Measure of All Things: The Seven-Year Odyssey and Hidden Error that Transformed the World. London: Little, Brown. ISBN 0-7432-1676-8. OCLC 53324804.
Aveni, Anthony (2001). Skywatchers: A Revised and Updated Version of Skywatchers of Ancient Mexico. Austin, TX: University of Texas Press. ISBN 0-292-70502-6. OCLC 45195586.
Barnett, Jo Ellen (1998). Time's Pendulum: From Sundials to Atomic Clocks, the Fascinating History of Timekeeping and How Our Discoveries Changed the World (1st ed.). San Diego, CA: Harcourt Trade Publishers. ISBN 0-15-600649-9. OCLC 40255897.
R.M.Ghias Abadi (2004) Achaemenid Inscriptions, 2nd edition, publisher Shiraz Navid ISBN 964-358-015-6
Berlev, Oleg (1997). "Bureaucrats".  In Donadoni, Sergio (ed.). The Egyptians. Trans. Bianchi, Robert et al. Chicago, IL: The University of Chicago Press. ISBN 0-226-15555-2. OCLC 35808323.
Bottomley, Frank (1983). The Castle Explorer's Guide. New York, NY: Crown Publishers. ISBN 0-517-42172-0. OCLC 9762252.
Clarke, Howard B.; Dent, Sarah; Johnson, Ruth (2002). Dublinia: The Story of Medieval Dublin. Dublin, Ireland: O'Brien. ISBN 0-86278-785-8. OCLC 50528116.
Chobotov, Vladimir (2002). Orbital Mechanics (3rd ed.). Reston, VA: AIAA. ISBN 1-56347-537-5. OCLC 49923275. נבדק ב-20 ביוני 2008. {{cite book}}:  (עזרה)
Cotterell, Brian; Kamminga, Johan (1990). Mechanics of Pre-Industrial Technology: An Introduction to the Mechanics of Ancient and Traditional Material Culture. Cambridge: Cambridge University Press. ISBN 0-521-42871-8. OCLC 18520966.
Davies, Norman (1996). Europe: A History. Oxford: Oxford University Press. ISBN 0-19-820171-0. OCLC 35593922.
Frugoni, Chiara (1988). Pietro et Ambrogio Lorenzetti. New York, NY: Scala Books. ISBN 0-935748-80-6. OCLC 18827370.
Lewis, Michael (2000). "Theoretical Hydraulics, Automata, and Water Clocks".  In Wikander, Örjan (ed.). Handbook of Ancient Water Technology. Technology and Change in History. Vol. 2. Leiden: Brill. pp. 343–369 (356f.). ISBN 90-04-11123-9.
Major, Fouad G. (1998). The Quantum Beat: The Physical Principles of Atomic Clocks. New York, NY: Springer. ISBN 0-387-98301-5. OCLC 37315254. נבדק ב-22 ביוני 2008. {{cite book}}:  (עזרה)
Marrison, Warren A. (1948). "The Evolution of the Quartz Crystal Clock". Bell System Technical Journal. New York, NY: AT&T. 27 (3): 510–88. doi:10.1002/j.1538-7305.1948.tb01343.x. OCLC 10999639.
Philbin, Tom (2005). The 100 Greatest Inventions of All Time: A Ranking Past to Present. New York, NY: Citadel Press. ISBN 0-8065-2404-9. OCLC 57166331. נבדק ב-20 ביוני 2008. {{cite book}}:  (עזרה)
Reid, Thomas (1832). Treatise on Clock and Watch Making: Theoretical and Practical. Carey and Lea. OCLC 17454059.
Richards, E. G. (1998). Mapping Time: The Calendar and its History. Oxford: Oxford University Press. ISBN 0-19-850413-6. OCLC 185547970.
Whitrow, Gerald J. (1989). Time in History: Views of Time from Prehistory to the Present Day (1st ed.). Oxford: Oxford University Press. ISBN 0-19-285211-6. OCLC 21182984.
Woods, Thomas (2005). How the Catholic Church Built Western Civilization. Washington D.C., United States: Regnery Publ. ISBN 0-89526-038-7. OCLC 58720707.