APA (7th ed.) Zitazioa

ebrary, Inc, Gertsen, N., & Sønderby, L. (2009). Water purification. Nova Science Publishers, Inc..

Chicago Style (17th ed.) Zitazioa

ebrary, Inc, Nikolaj Gertsen, eta Linus Sønderby. Water Purification. New York: Nova Science Publishers, Inc., 2009.

MLA (9th ed.) Zitazioa

ebrary, Inc, et al. Water Purification. Nova Science Publishers, Inc., 2009.