Cita APA (7th ed.)

Shelley, P. E. (1977). Sampling of water and wastewater. Environmental Research Information Center, Office of Research and Development.

Cita Chicago (17th ed.)

Shelley, Philip E. Sampling of Water and Wastewater. Cincinnati, Ohio: Environmental Research Information Center, Office of Research and Development, 1977.

Cita MLA (8th ed.)

Shelley, Philip E. Sampling of Water and Wastewater. Environmental Research Information Center, Office of Research and Development, 1977.