Dyfyniad APA

Leftwich, R. H., & Sharp, A. M. (1982). Economics of social issues (5th ed.). Business Publications ; Irwin-Dorsey.

Dyfyniad Arddull Chicago

Leftwich, Richard H., and Ansel Miree Sharp. Economics of Social Issues. 5th ed. Plano, Tex. : Georgetown, Ont.: Business Publications ; Irwin-Dorsey, 1982.

Dyfyniad MLA

Leftwich, Richard H., and Ansel Miree Sharp. Economics of Social Issues. 5th ed. Business Publications ; Irwin-Dorsey, 1982.

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