APA (7e ed.) Bronvermelding

Walters, J. E., & Backhaus, B. (1992). Shade and color with water-conserving plants. Timber Press.

Chicago (17e ed.) Bronvermelding

Walters, James E., en Balbir Backhaus. Shade and Color with Water-conserving Plants. Portland, Or.: Timber Press, 1992.

MLA (9e ed.) Bronvermelding

Walters, James E., en Balbir Backhaus. Shade and Color with Water-conserving Plants. Timber Press, 1992.