APA Edition Citation

Leorard, W. H., Martin, J. H., & Stamp, D. L. (1975). Principles of field crop production (Ed.3.).

Chicago Edition Citation

Leorard, Warren H., John H. Martin, and David L. Stamp. Principles of Field Crop Production. Ed.3. New York, Macmillan, 1975.

MLA Edition Citation

Leorard, Warren H., et al. Principles of Field Crop Production. Ed.3. 1975.