Cita APA (7th ed.)

(2005). Standard methods for the examination of water and wastewater (21st ed.). American Public Health Association.

Cita Chicago (17th ed.)

Standard Methods for the Examination of Water and Wastewater. 21st ed. Washington, D.C: American Public Health Association, 2005.

Cita MLA (9th ed.)

Standard Methods for the Examination of Water and Wastewater. 21st ed. American Public Health Association, 2005.