Cita APA

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

Chicago Style Citation

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

Cita MLA

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

Atenció: Aquestes cites poden no estar 100% correctes.