APA (7th ed.) Citation

Caesar, G. I., & Constans, L. (1926). Guerre des Gaules. "Les Belles Lettres".

Chicago Style (17th ed.) Citation

Caesar, Gaius Iulius, and Lèopold-Albert Constans. Guerre Des Gaules. Paris: "Les Belles Lettres", 1926.

MLA (9th ed.) Citation

Caesar, Gaius Iulius, and Lèopold-Albert Constans. Guerre Des Gaules. "Les Belles Lettres", 1926.