Catholic Church, Catholic Church. Pope (1227-1241 : Gregory IX), Lancelotti, G. P., Gratian, a. 1. c., & Freiesleben, C. H. (1746). Corpus juris canonici academicum. Impensis J. R. Thurnisii.
Chicago-viite (17. p.)Catholic Church, Catholic Church. Pope (1227-1241 : Gregory IX), Giovanni Paolo Lancelotti, active 12th century Gratian, ja Christoph Heinrich Freiesleben. Corpus Juris Canonici Academicum. Coloniae Munatianae: Impensis J. R. Thurnisii, 1746.
MLA-viite (8. p.)Catholic Church, et al. Corpus Juris Canonici Academicum. Impensis J. R. Thurnisii, 1746.
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