(1987). The New Encyclopaedia Britannica Volume 22 [Muhammad and the religion of Islam]. The University of Chicago.
Lua i Stíl Chicago (17ú heag.)The New Encyclopaedia Britannica Volume 22 [Muhammad and the Religion of Islam]. The University of Chicago, 1987.
Lua MLA (8ú heag.)The New Encyclopaedia Britannica Volume 22 [Muhammad and the Religion of Islam]. The University of Chicago, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.