APA (7th ed.) Citation

Dinzelbacher, P., & Clark, A. L. (2011). Middle Ages. Encyclopedia of Christianity online. doi:10.1163/2211-2685_eco_M436

Chicago Style (17th ed.) Citation

Dinzelbacher, Peter, and Anne L. Clark. "Middle Ages." Encyclopedia of Christianity Online 2011, https://doi.org/10.1163/2211-2685_eco_M436.

MLA (8th ed.) Citation

Dinzelbacher, Peter, and Anne L. Clark. "Middle Ages." Encyclopedia of Christianity Online, 2011, https://doi.org/10.1163/2211-2685_eco_M436.