Lua APA (7ú heag.)

Leftwich, R. H. (1970). The price system and resource allocation (4th ed.). National Bookstore.

Lua i Stíl Chicago (17ú heag.)

Leftwich, Richard H. The Price System and Resource Allocation. 4th ed. Manila: National Bookstore, 1970.

Lua MLA (9ú heag.)

Leftwich, Richard H. The Price System and Resource Allocation. 4th ed. National Bookstore, 1970.

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