Hendriksen , A., & Sneep, J. (1987). Plant breeding perspectives. Centre for Agricultural Publishing and Documentation.

Hendriksen , A.J.T., and J. Sneep. Plant Breeding Perspectives. Wageningen: Centre for Agricultural Publishing and Documentation, 1987.

Hendriksen , A.J.T., and J. Sneep. Plant Breeding Perspectives. Centre for Agricultural Publishing and Documentation, 1987.