APA (7th ed.) Citation

Rittershausen, B., & Rittershausen, W. (1971). Popular orchids ([1st American ed.].). A. S. Barnes.

Chicago Style (17th ed.) Citation

Rittershausen, Brian, and Wilma Rittershausen. Popular Orchids. [1st American ed.]. South Brunswick: A. S. Barnes, 1971.

MLA (9th ed.) Citation

Rittershausen, Brian, and Wilma Rittershausen. Popular Orchids. [1st American ed.]. A. S. Barnes, 1971.