Burkart, J.M., Hrdy, S.B. and Van Schaik, C.P. (2009), Cooperative breeding and human cognitive evolution. Evol. Anthropol., 18: 175-186. https://doi.org/10.1002/evan.20222
Duguid, S., & Melis, A.P. (2020) How animals collaborate: Underlying proximate mechanisms. WIRES Cognitive Science.