APA (7th ed.) Citation

Cooper, A. C., Palmer, C. A., & Wright, C. (1942). Twenty modern Americans. Harcourt, Brace and Company.

Chicago Style (17th ed.) Citation

Cooper, Alice Cecilia, Charles A. Palmer, and Cameron Wright. Twenty Modern Americans. New York: Harcourt, Brace and Company, 1942.

MLA (9th ed.) Citation

Cooper, Alice Cecilia, et al. Twenty Modern Americans. Harcourt, Brace and Company, 1942.