APA (7th ed.) Citation

Sommerfeld, E. O. (1999). Iron and manganese removal handbook. American Water Works.

Chicago Style (17th ed.) Citation

Sommerfeld, Elmer O. Iron and Manganese Removal Handbook. Denver, Colo.: American Water Works, 1999.

MLA (9th ed.) Citation

Sommerfeld, Elmer O. Iron and Manganese Removal Handbook. American Water Works, 1999.