Franklin

MLA

Tyler, Tom R. Why People Cooperate : the Role of Social Motivations. Princeton, N.J.: Princeton University Press, 2011.

APA

Tyler, T. R. (2011). Why people cooperate : the role of social motivations. Princeton, N.J.: Princeton University Press.

Chicago

Tyler, Tom R. Why People Cooperate: The Role of Social Motivations. Princeton, N.J.: Princeton University Press, 2011.