APA (7th ed.) Citation

Conrad, J., Ford, F. M., & Rogers, B. (1928). The sisters. Crosby Gaige.

Chicago Style (17th ed.) Citation

Conrad, Joseph, Ford Madox Ford, and Bruce Rogers. The Sisters. New York: Crosby Gaige, 1928.

MLA (9th ed.) Citation

Conrad, Joseph, et al. The Sisters. Crosby Gaige, 1928.