Cita APA (7th ed.)

Ray, R. G. (1960). Aerial photographs in geologic interpretation and mapping. United States Government Printing Office.

Cita Chicago (17th ed.)

Ray, Richard G. Aerial Photographs in Geologic Interpretation and Mapping. Washington, D.C.: United States Government Printing Office, 1960.

Cita MLA (8th ed.)

Ray, Richard G. Aerial Photographs in Geologic Interpretation and Mapping. United States Government Printing Office, 1960.