APA (7th ed.) Citation

Gregorio IX, P. (1606). Decretales (1a. ed.). Horacio Cardon.

Chicago Style (17th ed.) Citation

Gregorio IX, Papa. Decretales. 1a. ed. Lyon: Horacio Cardon, 1606.

MLA (9th ed.) Citation

Gregorio IX, Papa. Decretales. 1a. ed. Horacio Cardon, 1606.

Warning: These citations may not always be 100% accurate.