APA (7th ed.) Citation

Bernard Clairvaux, A., & Johannes Bonaventura Kardinal, H. Bernardi epistola ad fratres Carthusienses [u.a.] - BSB Clm 2991.

Chicago Style (17th ed.) Citation

Bernard Clairvaux, Abt, and Heiliger Johannes Bonaventura Kardinal. Bernardi Epistola Ad Fratres Carthusienses [u.a.] - BSB Clm 2991.

MLA (9th ed.) Citation

Bernard Clairvaux, Abt, and Heiliger Johannes Bonaventura Kardinal. Bernardi Epistola Ad Fratres Carthusienses [u.a.] - BSB Clm 2991.

Warning: These citations may not always be 100% accurate.