APA (7th ed.) Citation

Bernardo, S., Béguin, A., & Zumthor, P. (1947). Saint Bernard de Clairvaux. Egloff.

Chicago Style (17th ed.) Citation

Bernardo, Santo, Albert Béguin, and Paul Zumthor. Saint Bernard De Clairvaux. Paris: Egloff, 1947.

MLA (9th ed.) Citation

Bernardo, Santo, et al. Saint Bernard De Clairvaux. Egloff, 1947.