APA (7th ed.) Citation

Webb, R. H., & Betancourt, J. L. (1992). Climatic variability and flood frequency of the Santa Cruz River, Pima County, Arizona. Book and Open-File Report Sales, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Webb, Robert H., and Julio L. Betancourt. Climatic Variability and Flood Frequency of the Santa Cruz River, Pima County, Arizona. Denver, Colo: Book and Open-File Report Sales, U.S. Geological Survey, 1992.

MLA (9th ed.) Citation

Webb, Robert H., and Julio L. Betancourt. Climatic Variability and Flood Frequency of the Santa Cruz River, Pima County, Arizona. Book and Open-File Report Sales, U.S. Geological Survey, 1992.