Eckert, R. D., & Leftwich, R. j. a. (1988). The price system and resource allocation (10th ed.). The Dryden Press.
Lua i Stíl Chicago (17ú heag.)Eckert, Ross D., agus Richard jt. auth Leftwich. The Price System and Resource Allocation. 10th ed. Chicago: The Dryden Press, 1988.
Lua MLA (9ú heag.)Eckert, Ross D., agus Richard jt. auth Leftwich. The Price System and Resource Allocation. 10th ed. The Dryden Press, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.