1
by Gibb, Hamilton A. R.
Published 1962
2
by Sardar, Ziauddin
Published 1979
3
Published 1955
4
Published 1976
5
Published 1992
6
Published 2004
7
by Rosenthal, Franz
Published 1990
8
Published 1991
9
10
by Hashim bin Hj. Musa.
Published 2004
11
Published 2007