APA (7th ed.) Citation
Gregorius PP. XVI,, 1. (1999). Documentos de Gregório XVI e Pio IX (1831-1878). Paulus.
Chicago Style (17th ed.) Citation
Gregorius PP. XVI,, 1765–1846. Documentos De Gregório XVI E Pio IX (1831-1878). São Paulo: Paulus, 1999.
MLA (9th ed.) Citation
Gregorius PP. XVI,, 1765–1846. Documentos De Gregório XVI E Pio IX (1831-1878). Paulus, 1999.
Warning: These citations may not always be 100% accurate.