APA (7th ed.) Citation

Catholic Church, Catholic Church. Pope (1227-1241 : Gregory IX), Lancellotti, G. P., Gratian, a. 1. c., & Freiesleben, C. H. (1746). Corpus juris canonici academicum. J.R. Thurnisii.

Chicago Style (17th ed.) Citation

Catholic Church, Catholic Church. Pope (1227-1241 : Gregory IX), Giovanni Paolo Lancellotti, active 12th century Gratian, and Christoph Heinrich Freiesleben. Corpus Juris Canonici Academicum. Coloniae Munatianae: J.R. Thurnisii, 1746.

MLA (8th ed.) Citation

Catholic Church, et al. Corpus Juris Canonici Academicum. J.R. Thurnisii, 1746.