Khan, M. Fahim
The islamic foundation (great britain) , 1995
Buku Teks
Robinson, Joan, author
C.A. Watts, 1962
Buku Teks
Tucker, W.T., author
Holt, Renehart and Winston, 1964
Buku Teks
edited by Karl Shell
MIT Press, 1967
Buku Teks
Stinchcombe, Arhtur L.
Academic Press, 1983
Buku Teks