Cita APA

Hays, W. (1981). Facing geologic and hydrologic hazards: Earth-science considerations. Washington, D.C.: Departament of the Interior, Geological Survey.

Citación estilo Chicago

Hays, W.W.. Facing Geologic and Hydrologic Hazards: Earth-science Considerations. Washington, D.C.: Departament of the Interior, Geological Survey, 1981.

Cita MLA

Hays, W.W.. Facing Geologic and Hydrologic Hazards: Earth-science Considerations. Washington, D.C.: Departament of the Interior, Geological Survey, 1981.

Precaución: Estas citas no son 100% exactas.