Cita APA (7th ed.)
Ratisbonne, T. (1991). St. Bernard of Clairvaux: Oracle of the twelfth century. Tan Books and Publishers.
Cita Chicago (17th ed.)
Ratisbonne, Théodore. St. Bernard of Clairvaux: Oracle of the Twelfth Century. Rockford (Illinois): Tan Books and Publishers, 1991.
Cita MLA (9th ed.)
Ratisbonne, Théodore. St. Bernard of Clairvaux: Oracle of the Twelfth Century. Tan Books and Publishers, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.