Chopra, S., & Kanwar, J. (1959). Practical Agricultural Chemistry. S.Chand & company.
Chicago Edition CitationChopra, S.L, i J.S Kanwar. Practical Agricultural Chemistry. Delhi: S.Chand & company, 1959.
Cita MLAChopra, S.L, i J.S Kanwar. Practical Agricultural Chemistry. S.Chand & company, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.