APA (7th ed.) Citation

Ulrich, v. S., Sturlese, L., & Backes, I. (2020). De summo bono: Liber 5. Felix Meiner.

Chicago Style (17th ed.) Citation

Ulrich, von Strassburg, Loris Sturlese, and Ignaz Backes. De Summo Bono: Liber 5. Hamburg: Felix Meiner, 2020.

MLA (9th ed.) Citation

Ulrich, von Strassburg, et al. De Summo Bono: Liber 5. Felix Meiner, 2020.