APA (7th ed.) Citation

Bernard of Clairvaux, S. Prologus in antiphonarium. Brepols Publishers.

Chicago Style (17th ed.) Citation

Bernard of Clairvaux, Saint. Prologus in Antiphonarium. Turnhout: Brepols Publishers.

MLA (9th ed.) Citation

Bernard of Clairvaux, Saint. Prologus in Antiphonarium. Brepols Publishers.

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