Baba Krismasi ni mtu wa kufikirika anayedhaniwa kuleta zawadi hasa kwa watoto wema usiku wa Noeli. Asili yake ni mtu halisi, mtakatifu Nikolasi wa Myra, askofu aliyejulikana kwa ukarimu wake. Ndiyo sababu kwa kawaida kwa Kiingereza anaitwa Santa Claus (yaani Mtakatifu Nikolaus). Belk, Russell. 1989. "Materialism with the modern U.S. Christmas”. In Interpretive Consumer Research, ed. by Elizabeth C. Hirschman, Provo, UT: Association for Consumer Research, 75–104. Bowler, Gerry, Editor (2004). The World Encyclopedia of Christmas, Toronto: McClelland & Stewart Limited. ISBN 978-0-7710-1535-9 (0-7710-1535-6) Bowler, Gerry, (2007). Santa Claus: A Biography, Toronto: McClelland & Stewart Limited. ISBN 978-0-7710-1668-4 (0-7710-1668-9) Crump, William D. Editor (2006). The Christmas Encyclopedia, 2nd edition, Jefferson, North Carolina: McFarland & Company, Inc., Publishers, ISBN 978-0-7864-2293-7 Nissenbaum, Stephen (1997). The Battle for Christmas, New York: Alfred A. Knopf, ISBN 978-0-679-74038-4 (0-679-74038-4) Without Magic, Santa Would Need 12 Million Employees.