Saljūqnāma of Zahīr al-Dīn Nīshāpūrī : a critical text making use of the unique manuscript in the library of the Royal Asiatic Society - Nīshāpūrī, Zahīr al-Dīn, d. ca. 1184 or 5; Morton, A. H. (Gibb Memorial Trust, 2004)