1
Published 1997
2
3
by Ibrahim, I.A.
Published 1997
4
by Al-Attas, Ali Tawfik, Syed.
Published 2005
5
6
7
8
by Ibrahim, I. A.
Published 1997
9
10
by Abdu', Muhammad Yusuf
Published 2011
11
12
13
Published 1997
14
by Madelung, Wilferd F.
Published 1985
15
by Nasr, Seyyed Hossein
Published 1994
16
by Haeri, Shaykh Fadhlalla
Published 1985
17
by Pelham, Nicolas.
Published 2008
18
by Afzalur Rahman
Published 1980
19
by Chebel, Malek
Published 1997
20
by Yahya, Harun
Published 2000