Silk, J. B., & House, B. R. (2011). Evolutionary foundations of human prosocial sentiments. National Academy of Sciences.
استشهاد بنمط شيكاغوSilk, Joan B., و Bailey R. House. Evolutionary Foundations of Human Prosocial Sentiments. National Academy of Sciences, 2011.
MLA استشهادSilk, Joan B., و Bailey R. House. Evolutionary Foundations of Human Prosocial Sentiments. National Academy of Sciences, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.