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 Style (17th ed.) CitationŠahīd, 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 (9th ed.) CitationŠahīd, 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.
Warning: These citations may not always be 100% accurate.