एपीए उद्धरण

Chopra, S., & Kanwar, J. (1959). Practical Agricultural Chemistry. S.Chand & company.

शिकागो स्टाइल उद्धरण

Chopra, S.L, और J.S Kanwar. Practical Agricultural Chemistry. Delhi: S.Chand & company, 1959.

एमएलए उद्धरण

Chopra, S.L, और J.S Kanwar. Practical Agricultural Chemistry. S.Chand & company, 1959.