APA (7e ed.) Bronvermelding

Fehr, E. L., Jessen, H. J., & Fehr, W. R. (1987). Principles of cultivar development. Macmillan.

Chicago (17e ed.) Bronvermelding

Fehr, Elinor L., Holly J. Jessen, en W. R. Fehr. Principles of Cultivar Development. New York: Macmillan, 1987.

MLA (9e ed.) Bronvermelding

Fehr, Elinor L., et al. Principles of Cultivar Development. Macmillan, 1987.