Cita APA (7th ed.)
Loveland, T. R., & Ramey, B. (1986). Applications of U.S. Geological Survey digital cartographic products, 1979-1983. United States Government Print. Office.
Cita Chicago (17th ed.)
Loveland, Thomas R., i Ben Ramey. Applications of U.S. Geological Survey Digital Cartographic Products, 1979-1983. [Washington]: United States Government Print. Office, 1986.
Cita MLA (9th ed.)
Loveland, Thomas R., i Ben Ramey. Applications of U.S. Geological Survey Digital Cartographic Products, 1979-1983. United States Government Print. Office, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.