APA-čujuhus (7. p.)
Sommerfeld, E. O. (1999). Iron and manganese removal handbook. American Water Works.
Chicago-čujuhus (17. p.)
Sommerfeld, Elmer O. Iron and Manganese Removal Handbook. Denver, Colo.: American Water Works, 1999.
MLA-čujuhus (9. p.)
Sommerfeld, Elmer O. Iron and Manganese Removal Handbook. American Water Works, 1999.
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