APA استشهاد

Leftwich, R. H. (1960). The price system and resource allocation. Holt Rinehart and Winston.

استشهاد بنمط شيكاغو

Leftwich, Richard H. The Price System and Resource Allocation. New York: Holt Rinehart and Winston, 1960.

MLA استشهاد

Leftwich, Richard H. The Price System and Resource Allocation. Holt Rinehart and Winston, 1960.