APA (7th ed.) Zitazioa

Helfferich, F. (1962). Ion exchange. McGraw-Hill.

Chicago Style (17th ed.) Zitazioa

Helfferich, Friedrich. Ion Exchange. New York: McGraw-Hill, 1962.

MLA (9th ed.) Zitazioa

Helfferich, Friedrich. Ion Exchange. McGraw-Hill, 1962.