APA (7th ed.) Citation

Radulfo Ardens ca. 1140-ca. 1200, Heimann, C., Löffler, A., Janotta, T., & Ernst, S. (2020). Speculum Universale: Libri VII-X. Brepols.

Chicago Style (17th ed.) Citation

Radulfo Ardens ca. 1140-ca. 1200, Claudia Heimann, Anette Löffler, Tobias Janotta, and Stephan Ernst. Speculum Universale: Libri VII-X. Turnhout: Brepols, 2020.

MLA (9th ed.) Citation

Radulfo Ardens ca. 1140-ca. 1200, et al. Speculum Universale: Libri VII-X. Brepols, 2020.