APA (7th ed.) Citation

Geological Survey (U.S.) & Schmidt, R. G. (1994). Geology of the Elliston region, Powell and Lewis and Clark counties, Montana. U.S. G.P.O..

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and R. G. Schmidt. Geology of the Elliston Region, Powell and Lewis and Clark Counties, Montana. Washington: U.S. G.P.O., 1994.

MLA (9th ed.) Citation

Geological Survey (U.S.) and R. G. Schmidt. Geology of the Elliston Region, Powell and Lewis and Clark Counties, Montana. U.S. G.P.O., 1994.