Dyfyniad APA

Upham, A. A. (1910). An introduction to agriculture. D. Appleton and Company.

Dyfyniad Arddull Chicago

Upham, Arthur A. An Introduction to Agriculture. New York: D. Appleton and Company, 1910.

Dyfyniad MLA

Upham, Arthur A. An Introduction to Agriculture. D. Appleton and Company, 1910.

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