APA Style

Brian, ., Rittershausen, W. (2009). The Practical Encyclopedia of Orchids : A Complete Guide to Orchids and Their Cultivation . London: Anness Publishing.

MLA Style

Brian, ., Rittershausen, Wilma. "The Practical Encyclopedia of Orchids : A Complete Guide to Orchids and Their Cultivation". London: Anness Publishing, 2009. Text.