APA (7th ed.) Citation

Beeson, M. H., Tolan, T. L., & Madin, I. P. (1989). Geologic map of the Lake Oswego quadrangle, Clackamas, Multnomah, and Washington counties, Oregon. The Department.

Chicago Style (17th ed.) Citation

Beeson, Marvin H., Terry L. Tolan, and Ian P. Madin. Geologic Map of the Lake Oswego Quadrangle, Clackamas, Multnomah, and Washington Counties, Oregon. [Portland, Or.]: The Department, 1989.

MLA (9th ed.) Citation

Beeson, Marvin H., et al. Geologic Map of the Lake Oswego Quadrangle, Clackamas, Multnomah, and Washington Counties, Oregon. The Department, 1989.