Warren, John (1991). »Creswell's Use of the Theory of Dating by the Acuteness of the Pointed Arches in Early Muslim Architecture«. Muqarnas. BRILL. 8: 59–65 (61–63). doi:10.2307/1523154. JSTOR1523154.
Warren, John (1991). »Creswell's Use of the Theory of Dating by the Acuteness of the Pointed Arches in Early Muslim Architecture«. Muqarnas. BRILL. 8: 59–65 (61–63). doi:10.2307/1523154. JSTOR1523154.