Gaya APA

BAALI, F., Wardi, A. (1981). Ibn Khaldun and Islamic Thought-Styles: A Social Perspective . Boston: G.K. Hall and Co..

Gaya MLA

BAALI, Fuad., Wardi, Ali. "Ibn Khaldun and Islamic Thought-Styles: A Social Perspective". Boston: G.K. Hall and Co., 1981. Book.