Colvin, C., & Stevenson, J. A. (1922). Farm projects: A textbook in agriculture for seventh and eighth grades and junior high schools. The Macmillan Company.
Style de citation Chicago (17e éd.)Colvin, Carl, et John A. Stevenson. Farm Projects: A Textbook in Agriculture for Seventh and Eighth Grades and Junior High Schools. New York: The Macmillan Company, 1922.
Style de citation MLA (8e éd.)Colvin, Carl, et John A. Stevenson. Farm Projects: A Textbook in Agriculture for Seventh and Eighth Grades and Junior High Schools. The Macmillan Company, 1922.
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