American Association of Petroleum Geologists. Rocky Mountain Section. Meeting, Rocky Mountain Association of Geologists, American Association of Petroleum Geologists. Rocky Mountain Section. Field trip, Bolyard, D. W., & Sonnenberg, S. A. (1997). Geologic history of the Colorado Front Range. Rocky Mountain Association of Geologists.
Chicago Style (17th ed.) CitationAmerican Association of Petroleum Geologists. Rocky Mountain Section. Meeting, Rocky Mountain Association of Geologists, American Association of Petroleum Geologists. Rocky Mountain Section. Field trip, Dudley W. Bolyard, and Stephen A. Sonnenberg. Geologic History of the Colorado Front Range. Denver: Rocky Mountain Association of Geologists, 1997.
MLA (9th ed.) CitationAmerican Association of Petroleum Geologists. Rocky Mountain Section. Meeting, et al. Geologic History of the Colorado Front Range. Rocky Mountain Association of Geologists, 1997.