APA استشهاد

Layard,P R G, & Walters,A A. (1978). Microeconomic theory. Mc Graw Hill.

استشهاد بنمط شيكاغو

Layard,P R G, و Walters,A A. Microeconomic Theory. New York: Mc Graw Hill, 1978.

MLA استشهاد

Layard,P R G, و Walters,A A. Microeconomic Theory. Mc Graw Hill, 1978.