Martin, J. H., & Leonard, W. H. (1949). Principles of field crop production. New York: The Macmillan Company.
Chicago Style CitationMartin, John H., and Warren H. Leonard. Principles of Field Crop Production. New York: The Macmillan Company, 1949.
MLA CitationMartin, John H., and Warren H. Leonard. Principles of Field Crop Production. New York: The Macmillan Company, 1949.
Warning: These citations may not always be 100% accurate.