APA (7th ed.) Citation

Keen, R. A. (1987). Skywatch: The western weather guide. Fulcrum Inc..

Chicago Style (17th ed.) Citation

Keen, Richard A. Skywatch: The Western Weather Guide. Golden, Colo.: Fulcrum Inc., 1987.

MLA (8th ed.) Citation

Keen, Richard A. Skywatch: The Western Weather Guide. Fulcrum Inc., 1987.