Abélès, How the Anthropology of France Has Changed Anthropology in France: Assessing New Directions in the Field[失效連結] CulturalAnthropology 1999 p. 407 Barfield
(原始内容存档于2013-10-21). Bowles, S. and Gintis, H. A Cooperative Species: Human Reciprocity and Its Evolution. Princeton University Press. 2011 [2013-10-19]. ISBN 0-691-15125-3
(原始内容存档于2022-03-01). Dufour, V; Pelé, M; Neumann, M; Thierry, B; Call, J. Calculated reciprocity after all: computation behind token transfers in orang-utans. Biology