Sugiyama, Y. 1967. Social organization of Hanuman langurs. In Social Communication among Primates, ed. S. A. Altmann, pp. 221–53. Chicago: University of Chicago Press.
Social Communication among Primates
Surbeck, M., and G. Hohmann. 2013. Intersexual dominance relationships and the influence of leverage on the outcome of conflicts in wild bonobos. Behavioral Ecology and Sociobiology 67:1767–80.
Behavioral Ecology and Sociobiology 67:1767–80.
Surbeck, M., et al. 2017. Sex-specific association patterns in bonobos and chimpanzees reflect species differences in cooperation. Royal Society Open Science 4:161081.
Royal Society Open Science
—. 2019. Males with a mother living in their group have higher paternity success in bonobos but not chimpanzees. Current Biology 29: R341–57.
Current Biology
Swaab, D. F. 2010. Wij Zijn Ons Brein. Amsterdam: Contact (Dutch).
Wij Zijn Ons Brein
Swaab, D. F., and M. A. Hofman. 1990. An enlarged suprachiasmatic nucleus in homosexual men. Brain Research 537:141–48.
Brain Research
Taylor, S. 2002. The Tending Instinct: How Nurturing Is Essential for Who We Are and How We Live. New York: Henry Holt.
The Tending Instinct: How Nurturing Is Essential for Who We Are and How We Live
Thornhill, R., and C. T. Palmer. 2000. A Natural History of Rape: Biological Bases of Sexual Coercion. Cambridge, MA: MIT Press.
A Natural History of Rape: Biological Bases of Sexual Coercion
Tiger, L. 1969. Men in Groups. New York: Random House.
Men in Groups
Titze, I. R., and D. W. Martin. 1998. Principles of voice production. Journal of the Acoustical Society of America 104:1148.
Journal of the Acoustical Society of America