APA

Wilshire H. G., United States Geological Survey, . (1996). Geologic processes at the land surface. Washington, DC: United States Government Printing Office.

Chicago

Wilshire Howard Gordon, United States Geological Survey, . 1996. Geologic processes at the land surface. Washington, DC: United States Government Printing Office.

Harvard

Wilshire H. G., United States Geological Survey, . (1996). Geologic processes at the land surface. Washington, DC: United States Government Printing Office.

MLA

Wilshire Howard Gordon, United States Geological Survey, . Geologic processes at the land surface. Washington, DC: United States Government Printing Office. 1996.