Le Strange 1905, p. 62–63, 191, 227–228. Le Strange, Guy (1905). The Lands of the Eastern Caliphate: Mesopotamia, Persia, and Central Asia, from the Moslem Conquest to the Time of Timur. Nova Iorque: Barnes & Noble, Inc. OCLC1044046
Le Strange 1905, p. 191. Le Strange, Guy (1905). The Lands of the Eastern Caliphate: Mesopotamia, Persia, and Central Asia, from the Moslem Conquest to the Time of Timur. Nova Iorque: Barnes & Noble, Inc. OCLC1044046
