1. Chimpanzee politics: Power and sex among apes;FB de Waal,1982
2. Our inner ape: A leading primatologist explains why we are who we are;FB de Waal,2005
3. With a little help from a friend;FB de Waal;PLoS Biol,2007
4. The Bonobo and the atheist: In search of humanism among the primates;FB de Waal,2013
5. Kelleher K. Bonobos make love, not war. In: Los Angeles Times. 1997. Available from: http://articles.latimes.com/1997-06-22/news/ls-5723_1_male-bonobo/2.