APA (7th ed.) Citation

Geist, R. C. (1940). Bicycling as a hobby. Harper brothers.

Chicago Style (17th ed.) Citation

Geist, Roland C. Bicycling as a Hobby. New York, London: Harper brothers, 1940.

MLA (9th ed.) Citation

Geist, Roland C. Bicycling as a Hobby. Harper brothers, 1940.