Gaya APA
Hasan, Y, F. (1967).
The Arabs and the Sudan: From the seventh to the early six- teenth century. .
Edinburgh:
Edinburgh Edinburgh University Press.
Gaya MLA
Hasan, Yûsuf, Fadl.
"The Arabs and the Sudan: From the seventh to the early six- teenth century. ".
Edinburgh:
Edinburgh Edinburgh University Press,
1967.
Buku.