APA (7th ed.) Citation

Hehl, E., Düchting, R., Möhring, H., & Mentgen, G. (2011). Crusades. Religion Past and Present online. doi:10.1163/1877-5888_rpp_COM_12315

Chicago Style (17th ed.) Citation

Hehl, Ernst-Dieter, Reinhard Düchting, Hannes Möhring, and Gerd Mentgen. "Crusades." Religion Past and Present Online 2011, https://doi.org/10.1163/1877-5888_rpp_COM_12315.

MLA (8th ed.) Citation

Hehl, Ernst-Dieter, et al. "Crusades." Religion Past and Present Online, 2011, https://doi.org/10.1163/1877-5888_rpp_COM_12315.