APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.