APA (7th ed.) Citation

Schmid, W. G. (2002). An encyclopedia of shade perennials. Timber Press.

Chicago Style (17th ed.) Citation

Schmid, Wolfram George. An Encyclopedia of Shade Perennials. Portland, Or. : Cambridge: Timber Press, 2002.

MLA (9th ed.) Citation

Schmid, Wolfram George. An Encyclopedia of Shade Perennials. Timber Press, 2002.