Citation:
Vokey, J. R., Rendall, D., Tangen, J. M., Parr, L. A., & de Waal, F. (2004). Visual Kin Recognition and Family Resemblance in Chimpanzees \emph(Pan troglodytes).. Journal of Comparative Psychology, 118, 194. American Psychological Association. Copy at http://www.tinyurl.com/y3qwjrs2