Cooley, M. E., Aldridge, B. N., & Euler, R. C. (1977). Effects of the catastrophic flood of December 1966, North Rim area, eastern Grand Canyon, Arizona. United States Government Print. Off.
Chicago-Zitierstil (17. Ausg.)Cooley, Maurice E., Byron N. Aldridge, und Robert C. Euler. Effects of the Catastrophic Flood of December 1966, North Rim Area, Eastern Grand Canyon, Arizona. Washington: United States Government Print. Off, 1977.
MLA-Zitierstil (9. Ausg.)Cooley, Maurice E., et al. Effects of the Catastrophic Flood of December 1966, North Rim Area, Eastern Grand Canyon, Arizona. United States Government Print. Off, 1977.
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