1Betito, Laurie, PhD. The Sex Bible: For People over 50. Beverly, MA: Fair Winds Press, 2014.
2“FoxSexpert: U.S. Sex Laws, Amusing to Just Plain Silly.” Fox News. April 18, 2008. Accessed: February 24, 2016. ml
3Haller, Madeline. “The 5 Worst Sex Positions Ever." Men’s Health. December 5, 2015. Accessed: February 24, 2016.
4“Is Having Sex in the Water Safe?” Huffington Post. July 22, 2014. Accessed: February 25, 2016.
5“Part II: Chapter IX Of the Auparishtaka or Mouth Congress.” History of India. 2008.
6Priest, Robert J. “Missionary Positions: Christian, Modernist, and Postmodernist.” Current Anthropology 42 (1): 29-68.
7Rogiere, Jean. The Little Book of Sex. Berkeley, CA: Ulysses Press, 2001.
8Solomon, Michael R. The Mirror of Coitus: A Translation of the Fifteenth Century Speculum al foderi. Madison, WI: Hispanic Seminary of Medieval Studies, 1986.
9Younger, John. Sex in the Ancient World from A to Z. New York, NY: Routledge, 2005.