1. Sexual Dimorphisms and Breeding Systems in Pinnipeds, Ungulates, Primates and Humans;Alexander,1979
2. Das Problem der Menschwerdung;Bolk,1926
3. Glory Season;Brin,1992
4. The Evolution of Desire: Strategies of Human Mating;Buss,1994
5. The Ascent of Mind;Calvin,1991