APA (7th ed.) Citation

Webb, R. H., Griffiths, P. G., & Klearman, T. A. (2003). Frequency of debris flows in Grand Canyon. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Webb, Robert H., Peter G. Griffiths, and Tillie A. Klearman. Frequency of Debris Flows in Grand Canyon. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 2003.

MLA (9th ed.) Citation

Webb, Robert H., et al. Frequency of Debris Flows in Grand Canyon. U.S. Dept. of the Interior, U.S. Geological Survey, 2003.