APA (7th ed.) Citation

Knopf, A. (1963). Geology of the northern part of the Boulder bathylith and adjacent area, Montana. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Knopf, Adolph. Geology of the Northern Part of the Boulder Bathylith and Adjacent Area, Montana. Washington, D.C.: U.S. Geological Survey, 1963.

MLA (9th ed.) Citation

Knopf, Adolph. Geology of the Northern Part of the Boulder Bathylith and Adjacent Area, Montana. U.S. Geological Survey, 1963.