Dyfyniad APA

Davis, K. C. (1917). Productive farming (3d ed., rev. and enl.). J.B. Lippincott company.

Dyfyniad Arddull Chicago

Davis, Kary Cadmus. Productive Farming. 3d ed., rev. and enl. Philadelphia and London: J.B. Lippincott company, 1917.

Dyfyniad MLA

Davis, Kary Cadmus. Productive Farming. 3d ed., rev. and enl. J.B. Lippincott company, 1917.

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