Cita APA (7a ed.)

Leftwich, R. H. (1979). The price system and resource allocation (7th ed.). Dryden.

Cita Chicago Style (17a ed.)

Leftwich, Richard H. The Price System and Resource Allocation. 7th ed. Illinois: Dryden, 1979.

Cita MLA (9a ed.)

Leftwich, Richard H. The Price System and Resource Allocation. 7th ed. Dryden, 1979.