Geological Survey (U.S.). (1972). Grand Canyon National Park and vicinity, Arizona (Shaded relief ed. of 1972.). The Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.). Grand Canyon National Park and Vicinity, Arizona. Shaded relief ed. of 1972. Reston, Va.: The Survey, 1972.
MLA (9th ed.) CitationGeological Survey (U.S.). Grand Canyon National Park and Vicinity, Arizona. Shaded relief ed. of 1972. The Survey, 1972.
Warning: These citations may not always be 100% accurate.