Cita APA (7th ed.)

Singh, S. S. (1988). Crop management (BP-858.04.). Kalyani Publishers.

Cita Chicago (17th ed.)

Singh, S. S. Crop Management. BP-858.04. New Delhi / Ludhiana: Kalyani Publishers, 1988.

Cita MLA (9th ed.)

Singh, S. S. Crop Management. BP-858.04. Kalyani Publishers, 1988.