1. Albrecht, H. & S. C. Dunnett, 1971.Chimpanzees in Western Africa. Ethologische Studien, Vol. II, Piper, Munchen.
2. Goodall, J., 1965. Chimpanzees of the Gombe Stream Reserve. In:Primate Behavior: Field Studies of Monkeys and Apes,I. DeVore (ed.), Holt, Rinehart & Winston, New York, pp. 425–473.
3. ————, 1968. The behaviour of free-living chimpanzees in the Gombe Stream Reserve.Anim. Behav. Monog., 1: 161–311.
4. ————, 1973. Cultural elements in a chimpanzee community. In:Precultural Primate Behavior, Sym. 4th Int. Congr. Primat., Vol. 1,E. W. Menzel,Jr. &S. Brook (eds.), S. Karger, Basel, pp. 144–184.
5. ————,A. Bandora, E. Bergman, C. Busse, H. Matama, E. Mpongo, A. Pierce &D. Riss, 1979. Intercommunity interactions in chimpanzee population of the Gombe National Park. In:The Great Apes,D. A. Hamburg &E. R. McCown (eds.), Benjamin/Cummings, California, pp. 13–53.