APA (7th ed.) Citation

Colorado Geological Survey. (1910). Bulletin. [publisher not identified].

Chicago Style (17th ed.) Citation

Colorado Geological Survey. Bulletin. Boulder [etc.]: [publisher not identified], 1910.

MLA (9th ed.) Citation

Colorado Geological Survey. Bulletin. [publisher not identified], 1910.

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