Efferson, J. N. (1953). Principles of farm management: Intenational student edition. McGraw-Hill.
Chicago Style (17. basım) AtıfEfferson, J Norman. Principles of Farm Management: Intenational Student Edition. New York: McGraw-Hill, 1953.
MLA (9th ed.) AtıfEfferson, J Norman. Principles of Farm Management: Intenational Student Edition. McGraw-Hill, 1953.
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