Cita APA

Koch, P. (2010). Water sources (4th ed.). American Water Works Association.

Citación estilo Chicago

Koch, Paul. Water Sources. 4th ed. Denver, Colo.: American Water Works Association, 2010.

Cita MLA

Koch, Paul. Water Sources. 4th ed. American Water Works Association, 2010.

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