Sturm, E. (2011). Heidelberg Catechism. Religion Past and Present online. doi:10.1163/1877-5888_rpp_COM_09442
Chicago Style (17th ed.) CitationSturm, Erdmann. "Heidelberg Catechism." Religion Past and Present Online 2011, https://doi.org/10.1163/1877-5888_rpp_COM_09442.
MLA (8th ed.) CitationSturm, Erdmann. "Heidelberg Catechism." Religion Past and Present Online, 2011, https://doi.org/10.1163/1877-5888_rpp_COM_09442.
Warning: These citations may not always be 100% accurate.