APA Citation

Rittershausen, W., & Rittershausen. (2011). Orchids: A complete guide to orchids and their cultivation. London: Hermes House.

Chicago Style Citation

Rittershausen, Wilma, and Rittershausen. Orchids: A Complete Guide to Orchids and Their Cultivation. London: Hermes House, 2011.

MLA Citation

Rittershausen, Wilma, and Rittershausen. Orchids: A Complete Guide to Orchids and Their Cultivation. London: Hermes House, 2011.

Warning: These citations may not always be 100% accurate.