Halm, H., & Smith, J. I. (2011). Islam. Encyclopedia of Christianity online. doi:10.1163/2211-2685_eco_I348
Cita Chicago Style (17a ed.)Halm, Heinz, y Jane I. Smith. "Islam." Encyclopedia of Christianity Online 2011, https://doi.org/10.1163/2211-2685_eco_I348.
Cita MLA (8a ed.)Halm, Heinz, y Jane I. Smith. "Islam." Encyclopedia of Christianity Online, 2011, https://doi.org/10.1163/2211-2685_eco_I348.
Precaución: Estas citas no son 100% exactas.