APA (7th ed.) Citation

Barstow, C. L., Varian, G. E., & Remington, F. (1912). The progress of a united people. The Century co..

Chicago Style (17th ed.) Citation

Barstow, Charles Lester, George Edmund Varian, and Frederic Remington. The Progress of a United People. New York: The Century co., 1912.

MLA (9th ed.) Citation

Barstow, Charles Lester, et al. The Progress of a United People. The Century co., 1912.