APA (7th ed.) Citation

Armstrong, B. R. (1977). Avalanche hazard in Ouray County, Colorado, 1877-1976. Institute of Arctic and Alpine Research, University of Colorado.

Chicago Style (17th ed.) Citation

Armstrong, Betsy R. Avalanche Hazard in Ouray County, Colorado, 1877-1976. [Boulder]: Institute of Arctic and Alpine Research, University of Colorado, 1977.

MLA (9th ed.) Citation

Armstrong, Betsy R. Avalanche Hazard in Ouray County, Colorado, 1877-1976. Institute of Arctic and Alpine Research, University of Colorado, 1977.