↑ Radtke, B., Lory, P., Zarcone, Th., DeWeese, D., Gaborieau, M., F. M. Denny, Françoise Aubin, J. O. Hunwick and N. Mchugh, "Walī", in: Encyclopaedia of Islam, Second Edition, Edited by: P. Bearman, Th. Bianquis, C. E. Bosworth, E. van Donzel, W. P. Heinrichs.
