APA Edition Citation

Holden, J., & Williams, J. (1984). Crop genetic resources: Conservation and evaluation. George Allen & Unwin Ltd.

Chicago Edition Citation

Holden, J.H.W, and J.T Williams. Crop Genetic Resources: Conservation and Evaluation. London: George Allen & Unwin Ltd, 1984.

MLA Edition Citation

Holden, J.H.W, and J.T Williams. Crop Genetic Resources: Conservation and Evaluation. George Allen & Unwin Ltd, 1984.