Gaya APA
Douglas, E, H. (1978).
the Mystical philosophy of Ibn Masarra and his followers : Elmer H. Douglas .
Nederland:
E.J.Brill.
Gaya MLA
Douglas, Elmer, H..
"the Mystical philosophy of Ibn Masarra and his followers : Elmer H. Douglas".
Nederland:
E.J.Brill,
1978.
Buku.