APA (7th ed.) Citation

Hawkes, J. G. (1983). The diversity of crop plants. Harvard University Press.

Chicago Style (17th ed.) Citation

Hawkes, J. G. The Diversity of Crop Plants. Cambridge, Mass.: Harvard University Press, 1983.

MLA (9th ed.) Citation

Hawkes, J. G. The Diversity of Crop Plants. Harvard University Press, 1983.