Chopra, S. L., & Kanwar, J. S. (1980). Analytical Agricultural Chemistry. Kalyani Publishers.
Cita Chicago (17th ed.)Chopra, S. L., i J. S. Kanwar. Analytical Agricultural Chemistry. New Delhi: Kalyani Publishers, 1980.
Cita MLA (9th ed.)Chopra, S. L., i J. S. Kanwar. Analytical Agricultural Chemistry. Kalyani Publishers, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.