Winslow, I. O. (1890). The principles of agriculture for common schools. American Book Company.
Lua i Stíl Chicago (17ú heag.)Winslow, I. O. The Principles of Agriculture for Common Schools. New York, Cincinnati [etc.]: American Book Company, 1890.
Lua MLA (8ú heag.)Winslow, I. O. The Principles of Agriculture for Common Schools. American Book Company, 1890.
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