APA (7th ed.) Citation

Dunning, A., Close, P., & Markus, K. (1983). Reining. Western Horseman.

Chicago Style (17th ed.) Citation

Dunning, Al, Pat Close, and Kurt Markus. Reining. Colorado Springs, Colo.: Western Horseman, 1983.

MLA (9th ed.) Citation

Dunning, Al, et al. Reining. Western Horseman, 1983.