Connellan, Jennifer, Simon Baron-Cohen, Sally Wheelwright, Anna Batki, and Jag Ahluwalia. “Sex Differences in Human Neonatal Social Perception.” Infant Behavior and Development 23.1 (2000): 113-18. Web.
Baron-Cohen, Simon. The Essential Difference: The Truth about the Male and Female Brain. New York: Basic, 2003. Print.
Hines, Melissa, Michaela Constantinescu, and Debra Spencer. “Early Androgen Exposure and Human Gender Development.” Biology of Sex Differences 6.1 (2015): n. pag. Web.
Eaton, Warren O., and Lesley R. Enns. “Sex Differences in Human Motor Activity Level.” Psychological Bulletin100.1 (1986): 19-28. Web.
Arnold, A. “Organizational and Activational Effects of Sex Steroids on Brain and Behavior: A Reanalysis.” Hormones and Behavior 19.4 (1985): 469-98. Web.
Alexander, Gerianne M. “Postnatal Testosterone Concentrations and Male Social Development.” Frontiers in Endocrinology 5 (2014): n. pag. Web.
Goy, R. “Behavioral Masculinization Is Independent of Genital Masculinization in Prenatally Androgenized Female Rhesus Macaques.”Hormones and Behavior 22.4 (1988): 552-71. Web.
University of Virginia Health System. “Sex Chromosome Genes Influence Aggression And Maternal Behavior, Say Researchers.” ScienceDaily. ScienceDaily, 7 March 2006. <www.sciencedaily.com/releases/2006/03/060306214707.htm>.
Eisenegger, Christoph, Johannes Haushofer, and Ernst Fehr. “The Role of Testosterone in Social Interaction.” Trends in Cognitive Sciences15.6 (2011): 263-71. Web.
Tanner, J. M. Foetus into Man: Physical Growth from Conception to Maturity. Cambridge, MA: Harvard University Press, 1978. Print.
Geary, David C. Male, Female: The Evolution of Human Sex Differences. Washington, DC: American Psychological Association, 2010. 59-61. Print.
Geary, David C. Male, Female: The Evolution of Human Sex Differences. Washington, DC: American Psychological Association, 2010. 219-220. Print.
Geary, David C. Male, Female: The Evolution of Human Sex Differences. Washington, DC: American Psychological Association, 2010. 78-79. Print.
National Public Radio. “Testosterone.” This American Life, n.d. Web. 06 Jan. 2016.
Savin-Williams, Ritch C. Adolescence: An Ethological Perspective. New York: Springer-Verlag, 1987. Print.
Maccoby, Eleanor E., and Carol Nagy Jacklin. “Gender Segregation in Childhood.” Advances in Child Development and Behavior Advances in Child Development and Behavior 20 (1987): 239-87. Web.
Geary, David C. Male, Female: The Evolution of Human Sex Differences. Washington, DC: American Psychological Association, 2010. 322. Print.
Hassrick, Royal B., Cile M. Bach, and Dorothy Maxwell. The Sioux: Life and Customs of a Warrior Society. Norman, OK: University of Oklahoma, 1964. Print.
Geary, David C. Male, Female: The Evolution of Human Sex Differences. Washington, DC: American Psychological Association, 2010. 414-415. Print.
Gilmore, David D. Manhood in the Making: Cultural Concepts of Masculinity. New Haven, CT: Yale University Press, 1990. Print.
Vandello, Joseph A., and Jennifer K. Bosson. “Hard Won and Easily Lost: A Review and Synthesis of Theory and Research on Precarious Manhood.” Psychology of Men & Masculinity 14.2 (2013): 101-13. Web.
Simon, R. W., and A. E. Barrett. “Nonmarital Romantic Relationships and Mental Health in Early Adulthood: Does the Association Differ for Women and Men?” Journal of Health and Social Behavior 51.2 (2010): 168-82. Web.
Golden, Thomas R. Swallowed by a Snake: The Gift of the Masculine Side of Healing. Gaithersburg, MD: Golden Healing Publishing, 2000. Print.
Wager, Tor D., K. Luan Phan, Israel Liberzon, and Stephan F. Taylor. “Valence, Gender, and Lateralization of Functional Brain Anatomy in Emotion: A Meta-analysis of Findings from Neuroimaging.” NeuroImage 19.3 (2003): 513-31. Web.
Van Honk et al. “Testosterone Administration Impairs Cognitive Empathy in Women Depending on Second-to-fourth Digit Ratio.” Proceedings of the National Academy of Sciences 110.28 (2013): 11660-1661. Web.
Eisenegger, Christoph, Michael Naef, Romana Snozzi, Markus Heinrichs, and Ernst Fehr. “Prejudice and Truth about the Effect of Testosterone on Human Bargaining Behaviour.”Nature 463.7279 (2009): 356-59. Web.
Valerio, Max W. The Testosterone Files: My Hormonal and Social Transformation from Female to Male. Emeryville, CA: Seal, an Imprint of Avalon Publishing Group, 2006. Print.
Panksepp, Jaak, and Lucy Biven. The Archaeology of Mind: Neuroevolutionary Origins of Human Emotions. New York: W. W Norton, 2012. Print.
Taylor, Shelley E. The Tending Instinct: How Nurturing Is Essential for Who We Are and How We Live. New York: Times, 2002. Print.
Greene, Bob. Rebound: The Odyssey of Michael Jordan. Darby, PA: Diane Publishing Company, 1995. Print.
Moore, Robert. A Study in Masculine Psychology, audio tape series, King, Magician Warrior, Lover. C.G.Jung Institute of Chicago, 1989.
Eliade, Mircea, and Willard R. Trask. Rites and Symbols of Initiation: The Mysteries of Birth and Rebirth. New York: Harper & Row, 1965. Fin, Print.