APA Citation

Rittershausen, B., & Rittershausen, W. (1989). Orchids as houseplants. London: Ward, Lock Limited.

Chicago Style Citation

Rittershausen, Brian, and Wilma Rittershausen. Orchids As Houseplants. London: Ward, Lock Limited, 1989.

MLA Citation

Rittershausen, Brian, and Wilma Rittershausen. Orchids As Houseplants. London: Ward, Lock Limited, 1989.

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