APA (7th ed.) Citation

Rittershausen, P. R. C. (1954). Succesful Orchid culture. Collingridge.

Chicago Style (17th ed.) Citation

Rittershausen, P. R. C. Succesful Orchid Culture. London [u.a.]: Collingridge, 1954.

MLA (9th ed.) Citation

Rittershausen, P. R. C. Succesful Orchid Culture. Collingridge, 1954.

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