Gaya APA
Bakar, S, A, D, A. (1992).
the Book of certainty: the sufi doctrine of faith, vision and gnosis / Abu Bakar Siraj ad Din ( Martin Lings ) .
:
The Islamic Texts Society.
Gaya MLA
Bakar, Siraj, Ad, Din,, Abu.
"the Book of certainty: the sufi doctrine of faith, vision and gnosis / Abu Bakar Siraj ad Din ( Martin Lings )".
:
The Islamic Texts Society,
1992.
Referensi.