Leftwich, R. H. (1966). The price system and resource allocation (3rd ed.). Holt, Rinehart and winston.
Cita Chicago (17th ed.)Leftwich, Richard H. The Price System and Resource Allocation. 3rd ed. New York: Holt, Rinehart and winston, 1966.
Cita MLA (9th ed.)Leftwich, Richard H. The Price System and Resource Allocation. 3rd ed. Holt, Rinehart and winston, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.