Cita APA (7a ed.)

Não informado. (1982). National Water Conditions. U.S. Department of the Interior, Geological Survey.

Cita Chicago Style (17a ed.)

Não informado. National Water Conditions. Reston, Va: U.S. Department of the Interior, Geological Survey, 1982.

Cita MLA (8a ed.)

Não informado. National Water Conditions. U.S. Department of the Interior, Geological Survey, 1982.

Precaución: Estas citas no son 100% exactas.