APA استشهاد

Richard Cornes & Todd Sandler. (1996). The Theory of Externalities,Public Goods and Club Goods (2nd.). Cambridge University Press.

استشهاد بنمط شيكاغو

Richard Cornes و Todd Sandler. The Theory of Externalities,Public Goods and Club Goods. 2nd. New York: Cambridge University Press, 1996.

MLA استشهاد

Richard Cornes و Todd Sandler. The Theory of Externalities,Public Goods and Club Goods. 2nd. Cambridge University Press, 1996.