1. Female homosexual behavior inMacaca mulatta
2. Observational Study of Behavior: Sampling Methods
3. An evaluation of the conflict hypothesis as an explanatory principle for the evolution of displays, pp 187-227 in Function and Evolution in Behaviour. ; ; eds. Oxford, Clarendon Press, 1975.
4. Factors involved in the control of mounting behavior by female mammals, pp 83-131 in Reproduction and Sexual Behavior. ed. Bloomington, Indiana University Press, 1968.
5. Sexual attractivity, proceptivity, and receptivity in female mammals