APA (7th ed.) Citation

Duchesne, L. (1877). Etude sur le Liber Pontificalis. Ernest Thorin.

Chicago Style (17th ed.) Citation

Duchesne, L. Etude Sur Le Liber Pontificalis. Paris: Ernest Thorin, 1877.

MLA (9th ed.) Citation

Duchesne, L. Etude Sur Le Liber Pontificalis. Ernest Thorin, 1877.

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