APA (7th ed.) Citation

Hawkes, J., Williams, J. T., & Croston, R. (1983). A bibliography of crop genetic resources. International Board for Plant Genetic resources.

Chicago Style (17th ed.) Citation

Hawkes, J.G., John Travor Williams, and R.P Croston. A Bibliography of Crop Genetic Resources. Rome: International Board for Plant Genetic resources, 1983.

MLA (9th ed.) Citation

Hawkes, J.G., et al. A Bibliography of Crop Genetic Resources. International Board for Plant Genetic resources, 1983.