APA-viite

Houtsma, T. A. (2012). Encyclopedia of Islamic scholars and scientists, Vol.4.

Chicago-tyylinen lähdeviittaus

Houtsma, T; Arnold. Encyclopedia of Islamic Scholars and Scientists, Vol.4. Impact global publishing, Maryland, 2012.

MLA-viite

Houtsma, T; Arnold. Encyclopedia of Islamic Scholars and Scientists, Vol.4. 2012.