APA (7th ed.) Citation

Helfferich, F. G. (1995). Ion exchange / Friedrich Helfferich (Dover ed.). Dover.

Chicago Style (17th ed.) Citation

Helfferich, Friedrich G. Ion Exchange / Friedrich Helfferich. Dover ed. New York: Dover, 1995.

MLA (9th ed.) Citation

Helfferich, Friedrich G. Ion Exchange / Friedrich Helfferich. Dover ed. Dover, 1995.

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