APA (7th ed.) Citation

Dirr, M., & Stephan, M. (1990). Manual of woody landscape plants: Their identification, ornamental characteristics, culture, propagation and uses (4th ed.). Stipes Pub. Co..

Chicago Style (17th ed.) Citation

Dirr, Michael, and Margaret Stephan. Manual of Woody Landscape Plants: Their Identification, Ornamental Characteristics, Culture, Propagation and Uses. 4th ed. Champaign, Ill.: Stipes Pub. Co., 1990.

MLA (9th ed.) Citation

Dirr, Michael, and Margaret Stephan. Manual of Woody Landscape Plants: Their Identification, Ornamental Characteristics, Culture, Propagation and Uses. 4th ed. Stipes Pub. Co., 1990.