Shepardson, W. H. 1. (1929). Agricultural education in the United States. The Macmillan company.
Chicago Style (17. basım) AtıfShepardson, Whitney Hart 1890. Agricultural Education in the United States. New York: The Macmillan company, 1929.
MLA (9th ed.) AtıfShepardson, Whitney Hart 1890. Agricultural Education in the United States. The Macmillan company, 1929.
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