APA (7th ed.) Citation

Waardenburg, J. J. (2009). An open letter for open religions. Essays in memory of David A. Kerr ; 2: World Christianity in Muslim encounter, 220-235.

Chicago Style (17th ed.) Citation

Waardenburg, Jean Jacques. "An Open Letter for Open Religions." Essays in Memory of David A. Kerr ; 2: World Christianity in Muslim Encounter 2009: 220-235.

MLA (8th ed.) Citation

Waardenburg, Jean Jacques. "An Open Letter for Open Religions." Essays in Memory of David A. Kerr ; 2: World Christianity in Muslim Encounter, 2009, pp. 220-235.