APA (7th ed.) Citation

Pitkin, J. A. (1968). Airborne measurements of terrestrial radioactivity as an aid to geologic mapping. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Pitkin, James A. Airborne Measurements of Terrestrial Radioactivity as an Aid to Geologic Mapping. Washington: U.S. Govt. Print. Off, 1968.

MLA (9th ed.) Citation

Pitkin, James A. Airborne Measurements of Terrestrial Radioactivity as an Aid to Geologic Mapping. U.S. Govt. Print. Off, 1968.