APA (7th ed.) Citation

Guillaume de Conches, 1. 1., Ronca, I., Badia, L., & Pujol, J. (1997). Guillelmi de Conchis Dragmaticon philosophiae. Brepols.

Chicago Style (17th ed.) Citation

Guillaume de Conches, 1080-ca. 1154., Italo Ronca, Lola Badia, and J. Pujol. Guillelmi De Conchis Dragmaticon Philosophiae. Turnholti: Brepols, 1997.

MLA (9th ed.) Citation

Guillaume de Conches, 1080-ca. 1154., et al. Guillelmi De Conchis Dragmaticon Philosophiae. Brepols, 1997.