APA (7th ed.) Citation

Cicerón, M. T., Fohlen, G., & Humbert, J. (1931). Tusculanes: 2, (III-IV). Les Belles lettres.

Chicago Style (17th ed.) Citation

Cicerón, Marco Tulio, Georges Fohlen, and Jules Humbert. Tusculanes: 2, (III-IV). Paris: Les Belles lettres, 1931.

MLA (9th ed.) Citation

Cicerón, Marco Tulio, et al. Tusculanes: 2, (III-IV). Les Belles lettres, 1931.