Willoughby, J. (2008). Crossing Boundaries. International Institute of Islamic Thought.
Cita Chicago Style (17a ed.)Willoughby, Jay. Crossing Boundaries. International Institute of Islamic Thought, 2008.
Cita MLA (8a ed.)Willoughby, Jay. Crossing Boundaries. International Institute of Islamic Thought, 2008.
Precaución: Estas citas no son 100% exactas.