APA (7th ed.) Citation

Oudolf, P., & Gerritsen, H. (2003). Planting the natural garden. Timber Press.

Chicago Style (17th ed.) Citation

Oudolf, Piet, and Henk Gerritsen. Planting the Natural Garden. Portland Cambridge: Timber Press, 2003.

MLA (8th ed.) Citation

Oudolf, Piet, and Henk Gerritsen. Planting the Natural Garden. Timber Press, 2003.