APA (7th ed.) Citation

Zweig, S., Hella, A., & Bournac, O. (1928). Tolstoï. Editions Victor Attinger.

Chicago Style (17th ed.) Citation

Zweig, Stefan, Alzir Hella, and Olivier Bournac. Tolstoï. Paris [etc.]: Editions Victor Attinger, 1928.

MLA (9th ed.) Citation

Zweig, Stefan, et al. Tolstoï. Editions Victor Attinger, 1928.