Islam kekuatan doktrin dan kegamangan umat

 Maarif, A. Syafii;

Yogyakarta : Pustaka Pelajar , 1997

Basics of the islamic doctrine

 Al Tahawi, Abu Ja'far;

Beirut : Ibn Hazm Publishing House , 1991

The doctrine of the sufis / Arthur John Arberry

 Arberry, Arthur John;

England : Cambridge University Press , 1976

Al-Ghazali and the Ash'arite school

 Frank, R.M.;

London : Duke university Press , 1994