APA (7th ed.) Citation

Halm, H., & Smith, J. I. (2011). Islam. Encyclopedia of Christianity online. doi:10.1163/2211-2685_eco_I348

Chicago Style (17th ed.) Citation

Halm, Heinz, and Jane I. Smith. "Islam." Encyclopedia of Christianity Online 2011, https://doi.org/10.1163/2211-2685_eco_I348.

MLA (8th ed.) Citation

Halm, Heinz, and Jane I. Smith. "Islam." Encyclopedia of Christianity Online, 2011, https://doi.org/10.1163/2211-2685_eco_I348.

Warning: These citations may not always be 100% accurate.