APA (7th ed.) Citation

Geological Survey (U.S.), McLellan, M. W., & Biewick, L. H. (1989). Geologic map of the Bloom Creek quadrangle, Powder River County, Montana. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Marguerite W. McLellan, and Laura H. Biewick. Geologic Map of the Bloom Creek Quadrangle, Powder River County, Montana. Reston, Va.: The Survey, 1989.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of the Bloom Creek Quadrangle, Powder River County, Montana. The Survey, 1989.