APA (7th ed.) Citation

Ross, C. S., Smith, R. L., & Geological Survey. (1961). Ash-flow tuffs: Their origin, geologic relations, and identification. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Ross, Clarence S., Robert L. Smith, and Geological Survey. Ash-flow Tuffs: Their Origin, Geologic Relations, and Identification. Washington: United States Department of the Interior, Geological Survey, 1961.

MLA (8th ed.) Citation

Ross, Clarence S., et al. Ash-flow Tuffs: Their Origin, Geologic Relations, and Identification. United States Department of the Interior, Geological Survey, 1961.