APA (7th ed.) Citation

Denisen, E. L. (1979). Principles of horticulture (2d ed.). Macmillan.

Chicago Style (17th ed.) Citation

Denisen, Ervin L. Principles of Horticulture. 2d ed. New York: Macmillan, 1979.

MLA (9th ed.) Citation

Denisen, Ervin L. Principles of Horticulture. 2d ed. Macmillan, 1979.