HOUTSMA, M. T. [. (1993). First encyclopaedia of Islam 1913-1936 vol.4. E.J. Brill.
Lua i Stíl Chicago (17ú heag.)HOUTSMA, M. Th [Ed.]. First Encyclopaedia of Islam 1913-1936 Vol.4. Leiden: E.J. Brill, 1993.
Lua MLA (9ú heag.)HOUTSMA, M. Th [Ed.]. First Encyclopaedia of Islam 1913-1936 Vol.4. E.J. Brill, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.