Yoerg, S. I. (2002). Clever as a fox: Animal intelligence and what it can teach us about ourselves. Massachusetts: Harvard University.
استشهاد بنمط شيكاغوYoerg, Sonja I. Clever As a Fox: Animal Intelligence and What It Can Teach Us About Ourselves. Massachusetts: Harvard University, 2002.
MLA استشهادYoerg, Sonja I. Clever As a Fox: Animal Intelligence and What It Can Teach Us About Ourselves. Massachusetts: Harvard University, 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.