Gaya APA

Fair, G, M., Geyer, J, C, , &, O, D. (1971). Elements of water supply and wasterwater disposal (1971). : New York : John Wiley & Sons,.

Gaya MLA

Fair, Gordon, Maskew., Geyer, John, Charles, , &, Okun,, D. "Elements of water supply and wasterwater disposal". 1971 : New York : John Wiley & Sons,, 1971. Text.