Šahīd, ʿ. (1982). Omar Khayyam, the philosopher-poet of medieval Islam: Inaugural lecture of the Sultanate of Oman Chair in Arabic and Islamic Literature, Georgetown Univ., 1 Dec. 1981. Georgetown Univ. Pr.
Chicago-Zitierstil (17. Ausg.)Šahīd, ʿIrfān. Omar Khayyam, the Philosopher-poet of Medieval Islam: Inaugural Lecture of the Sultanate of Oman Chair in Arabic and Islamic Literature, Georgetown Univ., 1 Dec. 1981. Washington, D.C: Georgetown Univ. Pr, 1982.
MLA-Zitierstil (9. Ausg.)Šahīd, ʿIrfān. Omar Khayyam, the Philosopher-poet of Medieval Islam: Inaugural Lecture of the Sultanate of Oman Chair in Arabic and Islamic Literature, Georgetown Univ., 1 Dec. 1981. Georgetown Univ. Pr, 1982.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.