21
by Ghazali, Imam.
Published 2008
22
23
by Muhammad Haguib Al-Attas, Syed
Published 1970
24
Published 1995
25
by Vali, Ferenc A, 1905-
Published 1976
26
by Sajoo, Amyn B.
Published 1994
27
by Nathan, James A.
Published 1985
28
by Brewster, R. Wallace
Published 1963
29
by Johnson, Simon
Published 1995
30
by Yodfat, Aryeh, 1923-
Published 1977
31
by Kosaka, Masataka, 1934-
Published 1982
32
Published 1984
33
by Roberts, Geoffrey K.
Published 1972
34
by Keon, Michael, 1918-
Published 1977
35
by Crozier, Brian, 1918-
Published 1976
36
Published 1991
37
Published 1996
38
by Rothgeb, John M.
Published 1993
39
Published 1996
40
Published 1993