Niazi, Kausar
Sh. Muhammad Ashraf, 1976
Buku Teks
Armstrong, Karen, author
Phoenix, 1991
Buku Teks
Andrae, Tor, author
Kungl. Boktryckeriet. P.A. Norstedt & Soner, 1918
Buku Klasik
A.C. Nix, 1931
Buku Klasik
Iljas Ismail, author
Islamic Da'wah Council of The Philippines, 1988
Buku Teks