Coalitions and alliances in humans and other animals, 1992 t.p. (Frans B.M. de Waal, Wisconsin Regional Primate Research Center, Univ. of Wisconsin-Madison and Yerkes Regional Primate Center/Psychology Dept., Emory University, Atlanta)
Peacemaking among primates, 1990, c1989 t.p. (Frans de Waal) p. 4 of cover (research scientist, Wisc. Regional Primate Res. Ctr.; photographer and primatologist)
Sociobiologie ter discussie, 1981 (a.e.) t.p. (Dr. F.B.M. de Waal) p. vi (Frans de Waal, b. 1948)