APA-Zitierstil (7. Ausg.)

Dirr, M. A. (2007). Dirr's hardy trees and shrubs: An illustrated encyclopedia (21. print.). Timber Press.

Chicago-Zitierstil (17. Ausg.)

Dirr, Michael A. Dirr's Hardy Trees and Shrubs: An Illustrated Encyclopedia. 21. print. Portland, Or: Timber Press, 2007.

MLA-Zitierstil (9. Ausg.)

Dirr, Michael A. Dirr's Hardy Trees and Shrubs: An Illustrated Encyclopedia. 21. print. Timber Press, 2007.