APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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