APA (7th ed.) Citation

Lucas, S. C. (2011). Sunna. Encyclopedia of Christianity online. doi:10.1163/2211-2685_eco_SI.99

Chicago Style (17th ed.) Citation

Lucas, Scott C. "Sunna." Encyclopedia of Christianity Online 2011, https://doi.org/10.1163/2211-2685_eco_SI.99.

MLA (8th ed.) Citation

Lucas, Scott C. "Sunna." Encyclopedia of Christianity Online, 2011, https://doi.org/10.1163/2211-2685_eco_SI.99.