1. : Behavioral evidence for monopolization of paternity in multi-male groups of golden lion tamarins. Animal behaviour (in press).
2. : Managing zoo environments for reintroduction. Proceedings of the american association of zoological parks and aquariums annual conference (in press).
3. : Animal tool behavior. New York, Garland STPM Press, 1980.
4. Correlates of sexual and maternal competence in captive gorillas
5. : The mammalian radiations. Chicago, University of Chicago Press, 1981.