1. ; : Relationship between foraging and affiliative social referencing in primates. Pp. 247-268 in Ecology and Behavior of Foodenhanced Primate Groups. eds. New York, Alan R. Liss, 1988.
2. Attachment in Monkey Infants Raised in Variable- and Low-Demand Environments
3. : Attachment and Loss, Vol. 1. Attachment, 2nd ED. New York, Basic Books, 1982.
4. ; ; : Animal models of human behavior: Their application to the study of attachment. Pp. 31-42 in The Development of Attachment and Affiliative Systems. eds. New York, Plenum Press, 1982.
5. ; : Effects of maternal employment on maternal and two-year-old child behavior. Paper Presented at the Meeting of the Society for Research in Child Development, Kansas City, MO, 1989.