APA (7th ed.) Citation

Christiansen, R. D. (1985). Colorado geologic highway map. Western GeoGraphics.

Chicago Style (17th ed.) Citation

Christiansen, R. D. Colorado Geologic Highway Map. [Canon City, Colo.]: Western GeoGraphics, 1985.

MLA (9th ed.) Citation

Christiansen, R. D. Colorado Geologic Highway Map. Western GeoGraphics, 1985.

Warning: These citations may not always be 100% accurate.