Herbers, K. (2015). Calixtus III., Papst. Religion in Geschichte und Gegenwart online. doi:10.1163/2405-8262_rgg4_SIM_02693
Chicago Style (17th ed.) CitationHerbers, Klaus. "Calixtus III., Papst." Religion in Geschichte Und Gegenwart Online 2015, https://doi.org/10.1163/2405-8262_rgg4_SIM_02693.
MLA (8th ed.) CitationHerbers, Klaus. "Calixtus III., Papst." Religion in Geschichte Und Gegenwart Online, 2015, https://doi.org/10.1163/2405-8262_rgg4_SIM_02693.
Warning: These citations may not always be 100% accurate.