Cita APA (7th ed.)

Eckert, R. D., & Leftwich, R. H. (1988). The price system and resource allocation (10th ed.). National Bookstore.

Cita Chicago (17th ed.)

Eckert, Ross D., i Richard H. Leftwich. The Price System and Resource Allocation. 10th ed. Manila: National Bookstore, 1988.

Cita MLA (9th ed.)

Eckert, Ross D., i Richard H. Leftwich. The Price System and Resource Allocation. 10th ed. National Bookstore, 1988.