Allen, Linda. Decking the Halls: The Folklore and Traditions of Christmas Plants.
Willow Creek Press. September 2000.
Baker, Margaret. Discovering Christmas Customs and Folklore: A Guide to Seasonal Rites. Shire Publications Ltd. Buckinghamshire. 2007.
Forbes, Bruce D. Christmas: A Candid History. University of California Press. Berkeley and Los Angeles, California. 1953.
Hottes, Alfred Carl. 1001 Christmas Facts and Fancies 1937. A.T. De La Mare Co, Inc. New York, NY. 1937.
Jacquet, Helene. Christmas Plays from Oberufer: The Paradise Play, the Shepherds Play, the Kings Play. Sophia Books, Forest Row, RH. 2007.
Jeep, John M. Medieval Germany: An Encyclopedia (Routledge Encyclopedias of the Middle Ages). Routledge; 1 edition. January 10, 2001.
Miles, Clement A. Christmas in Ritual and Tradition, Christian and Pagan. Biblio Bazaar. 2008.
Philpot, J.H. The Sacred Tree; or the Tree in Religion and Myth. Dover Publications. May 11, 2004.
Sheryl Ann Karas. The Solstice Evergreen: The History, Folklore and Origins of the Christmas Tree. Rev. Ed. Fairfield: Aslan Publishing. 1998.
Tille, Alexander. Yule and Christmas: their Place in the Germanic Year. Strand London, 1899.
Walsh, William S. Curiosities of Popular Customs and of Rites, Ceremonies, Observances, and Miscellaneous Antiquities. JB Lippincott Co. Philadelphia. 1898.
Wernecke, Herbert Henry. Christmas customs around the world 1912. Westminster Press. 1912.
Spicer, Dorothy Gladys. Festivals of Western Europe. BiblioBazaar. March 3, 2008.
Frequently Asked Questions National Christmas Tree Association./