Medieval Institute Publications,, 1982.
Buku Teks
Fowler, Edward
University of California Press,, 1988
Buku Teks
Mass, Jeffrey P., author
Yale University Press, 1974
Buku Teks
Baker, Geoffrey H.
E&FN Spon, 1996
Buku Teks
Islamabad : Islamic Research Institute
Majalah, Jurnal, Buletin