Παραπομπή APA

Efferson, J. N. (1953). Principles of farm management: (International Student edition). New York: McGraw - Hill.

Παραπομπή Chicago Style

Efferson, J. Norman. Principles of Farm Management: (International Student Edition). New York: McGraw - Hill, 1953.

Παραπομπή MLA

Efferson, J. Norman. Principles of Farm Management: (International Student Edition). New York: McGraw - Hill, 1953.

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