APA (7th ed.) Citation

Helfferich, F. G. (1962). Ion exchange. McGraw-Hill Book Co., Inc.

Chicago Style (17th ed.) Citation

Helfferich, Friedrich G. Ion Exchange. New York: McGraw-Hill Book Co., Inc, 1962.

MLA (9th ed.) Citation

Helfferich, Friedrich G. Ion Exchange. McGraw-Hill Book Co., Inc, 1962.