Dris, R., Jain, S. M., & Khan, I. A. (2002). Environment and crop production. Oxford & IBH Publishing Co..
Cita Chicago (17th ed.)Dris, Ramdane, Shri Mohan Jain, i Iqrar A. Khan. Environment and Crop Production. New Delhi: Oxford & IBH Publishing Co., 2002.
Cita MLA (9th ed.)Dris, Ramdane, et al. Environment and Crop Production. Oxford & IBH Publishing Co., 2002.
Atenció: Aquestes cites poden no estar 100% correctes.