APA (7th ed.) Citation

Simmons, R. F. (1949). Custom built rifles. Stackpole Co. and Heck.

Chicago Style (17th ed.) Citation

Simmons, Richard F. Custom Built Rifles. New York: Stackpole Co. and Heck, 1949.

MLA (9th ed.) Citation

Simmons, Richard F. Custom Built Rifles. Stackpole Co. and Heck, 1949.