APA (7th ed.) Citation

Duchesne, L. (1909). The Roman Church Before Constantine. New York.

Chicago Style (17th ed.) Citation

Duchesne, Louis. The Roman Church Before Constantine. New York, 1909.

MLA (8th ed.) Citation

Duchesne, Louis. The Roman Church Before Constantine. New York, 1909.

Warning: These citations may not always be 100% accurate.