APA (7th ed.) Citation

Winston, D., Horodyski, R. J., & Whipple, J. W. (1989). Middle Proterozoic belt supergroup, western Montana: Great Falls, Montana to Spokane, Washington, July 20-28, 1989. American Geophysical Union.

Chicago Style (17th ed.) Citation

Winston, Donald, Robert J. Horodyski, and James W. Whipple. Middle Proterozoic Belt Supergroup, Western Montana: Great Falls, Montana to Spokane, Washington, July 20-28, 1989. Washington, D.C.: American Geophysical Union, 1989.

MLA (9th ed.) Citation

Winston, Donald, et al. Middle Proterozoic Belt Supergroup, Western Montana: Great Falls, Montana to Spokane, Washington, July 20-28, 1989. American Geophysical Union, 1989.