Shepard, W. The Diversity of Islamic Thought: Towards a Typology / William Shepard. Islamic thought in the twentieth century.(2004).

Shepard, William. "The Diversity of Islamic Thought: Towards a Typology / William Shepard." Islamic Thought in the Twentieth Century.(2004) .

Shepard, William. "The Diversity of Islamic Thought: Towards a Typology / William Shepard." Islamic Thought in the Twentieth Century.(2004), .