1. Baboon Mothers and Infants. Cambridge, Harvard University Press, 1980.
2. Motherless mothers revisited: Rhesus maternal behavior and rearing history
3. ; Qualities of mother-infant relationships in monkeys. Pp. 39-67 in Parent-Infant Interaction. Ciba Foundation Symposium Vol. 33. Amsterdam, Elsevier, 1975.
4. Infant kidnapping among group-living rhesus macaques: Why don't mothers rescue their infants?
5. Maternal anxiety in rhesus macaques (Macaca mulatta). I. Measurement of anxiety and identification of anxiety-eliciting situations. Ethology, in press, a.