APA (7th ed.) Citation

Geological Survey (U.S.), Harrison, J. E., Cressman, E. R., & Whipple, J. W. (1993). Geologic and structure maps of the Kalispell 1 x 2 quadrangle, Montana, and Alberta and British Columbia. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Jack Edward Harrison, Earle Rupert Cressman, and James W. Whipple. Geologic and Structure Maps of the Kalispell 1 X 2 Quadrangle, Montana, and Alberta and British Columbia. Reston, VA: The Survey, 1993.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic and Structure Maps of the Kalispell 1 X 2 Quadrangle, Montana, and Alberta and British Columbia. The Survey, 1993.