APA (7th ed.) Citation

Oppenheimer, H. L. (1961). Cowboy arithmetic: Cattle as an investment. The Interstate.

Chicago Style (17th ed.) Citation

Oppenheimer, Harold L. Cowboy Arithmetic: Cattle as an Investment. Danville, Ill.: The Interstate, 1961.

MLA (9th ed.) Citation

Oppenheimer, Harold L. Cowboy Arithmetic: Cattle as an Investment. The Interstate, 1961.