Cita APA (7th ed.)

Cowen, W. F. (1979). Available phosphorus in urban runoff and Lake Ontario tributary waters. University Microfilms.

Cita Chicago (17th ed.)

Cowen, William Frank. Available Phosphorus in Urban Runoff and Lake Ontario Tributary Waters. Ann Arbor, Mich.: University Microfilms, 1979.

Cita MLA (8th ed.)

Cowen, William Frank. Available Phosphorus in Urban Runoff and Lake Ontario Tributary Waters. University Microfilms, 1979.