原文出處：
Richard W. Wrangham, Kathelijne Koops, Zarin P. Machanda, Steven Worthington, Andrew B. Bernard, Nicholas F. Brazeau, Ronan Donovan, Jeremiah Rosen, Claudia Wilke, Emily Otali, Martin N. Muller. Distribution of a Chimpanzee Social Custom Is Explained by Matrilineal Relationship Rather Than Conformity. Current Biology, 2016; 26 (22): 3033 DOI: 10.1016/j.cub.2016.09.005
http://www.sciencedirect.com/science/article/pii/S0960982216310545
<授權轉載自中華民國生物多樣性資訊網>
