Style de citation APA (7e éd.)

Melis, A. P., Engelmann, J. M., & Warneken, F. (2018). Correspondence: Chimpanzee helping is real, not a byproduct. Nature Portfolio.

Style de citation Chicago (17e éd.)

Melis, Alicia P., Jan M. Engelmann, et Felix Warneken. Correspondence: Chimpanzee Helping Is Real, Not a Byproduct. Nature Portfolio, 2018.

Style de citation MLA (8e éd.)

Melis, Alicia P., et al. Correspondence: Chimpanzee Helping Is Real, Not a Byproduct. Nature Portfolio, 2018.