Grabar, Oleg. "The Iconography of Islamic Architecture." In Early Islamic Art, 650-1100, volume I, Constructing the Study of Islamic Art. Hampshire: Ashgate Publishing Limited, 2005. First published in Priscilla P. Soucek, ed., Content and Context of Visual Arts in the Islamic World (Pennsylvania State University Press, University Park and London, 1988), pp. 51-65.
Early Islamic Art, 650-1100 Part One: Origins and Context Chapter IV: The Iconography of Islamic Architecture