Dyfyniad APA

Epp,Donald J, & Malone,John W. (1981). Introduction to agricultural economics. Mac Millan Publishing Co.

Dyfyniad Arddull Chicago

Epp,Donald J, and Malone,John W. Introduction to Agricultural Economics. New York: Mac Millan Publishing Co, 1981.

Dyfyniad MLA

Epp,Donald J, and Malone,John W. Introduction to Agricultural Economics. Mac Millan Publishing Co, 1981.

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