APA-čujuhus (7. p.)
Ritter, J. A. (2010). Water quality (4th ed.). American Water Works Association.
Chicago-čujuhus (17. p.)
Ritter, Joseph A. Water Quality. 4th ed. Denver, Colo.: American Water Works Association, 2010.
MLA-čujuhus (9. p.)
Ritter, Joseph A. Water Quality. 4th ed. American Water Works Association, 2010.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.