Παραπομπή APA

(1940). Farmers in a changing world. Washington, D.C: Government Printing Office.

Παραπομπή Chicago Style

Farmers in a Changing World. Washington, D.C: Government Printing Office, 1940.

Παραπομπή MLA

Farmers in a Changing World. Washington, D.C: Government Printing Office, 1940.

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