एपीए उद्धरण

Simmonds, N. (1979). Principles of crop improvement. London: Longman.

शिकागो स्टाइल उद्धरण

Simmonds, N.W. Principles of Crop Improvement. London: Longman, 1979.

एमएलए उद्धरण

Simmonds, N.W. Principles of Crop Improvement. London: Longman, 1979.