المؤلفون: Escobar, Martha E.^Aff116, Arcediano, Francisco^Aff117, Unobagha, Chukwuebuka^Aff117, Krause, Mark A., Section editor^Aff118

المساهمون: Vonk, Jennifer, editor^Aff1, Shackelford, Todd K., editor^Aff2

المصدر: Encyclopedia of Animal Cognition and Behavior. :30-36