Maleczek, W. (2011). Innocent III, Pope. Religion Past and Present online. doi:10.1163/1877-5888_rpp_SIM_10443
芝加哥风格引文Maleczek, Werner. "Innocent III, Pope." Religion Past and Present Online 2011, https://doi.org/10.1163/1877-5888_rpp_SIM_10443.
MLA引文Maleczek, Werner. "Innocent III, Pope." Religion Past and Present Online, 2011, https://doi.org/10.1163/1877-5888_rpp_SIM_10443.
警告：这些引文格式不一定是100％准确.
