APA (7th ed.) Citation

Rølvaag, O. E., & Ager, T. M. (1931). Their fathers' God: A novel. Harper & Brothers.

Chicago Style (17th ed.) Citation

Rølvaag, O. E., and Trygve M. Ager. Their Fathers' God: A Novel. New York, London: Harper & Brothers, 1931.

MLA (9th ed.) Citation

Rølvaag, O. E., and Trygve M. Ager. Their Fathers' God: A Novel. Harper & Brothers, 1931.