Erikson, Erik H.
Gandhi's truth : on the origins of militant nonviolence
Norton & Company , 1969
Buku Teks SO
Rahman, Fazlur
Islam
Pustaka, 2000
Buku Teks SO
Rahman, Fazlur
Islam
Bandung Pustaka 1984
Buku Teks
Schuon, Frithjof
Memahami Islam = Understanding islam
Pustaka, 1983
Buku Teks SO
Dayf, Shawqi
The Universality of Islam
ISESCO , 1998
Buku Teks SO