APA (7th ed.) Citation

Luft, S. J., Colton, R. B., & Heffern, E. L. (1984). Photogeologic and reconnaissance geologic map of the Knob quadrangle, Custer County, Montana. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Luft, Stanley Jeremie, Roger B. Colton, and Edward L. Heffern. Photogeologic and Reconnaissance Geologic Map of the Knob Quadrangle, Custer County, Montana. Reston, Va.: U.S. Geological Survey, 1984.

MLA (9th ed.) Citation

Luft, Stanley Jeremie, et al. Photogeologic and Reconnaissance Geologic Map of the Knob Quadrangle, Custer County, Montana. U.S. Geological Survey, 1984.