APA (7th ed.) Citation

Gregory IX, P., & Noonan, J. T. (1982). Decretals. s.n.].

Chicago Style (17th ed.) Citation

Gregory IX, Pope, and John Thomas Noonan. Decretals. [S.l.: s.n.], 1982.

MLA (8th ed.) Citation

Gregory IX, Pope, and John Thomas Noonan. Decretals. s.n.], 1982.