Long, D. E. (1979). The Hajj today: A survey of the contemporary pilgrimage to Makkah. State University of New York Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLong, David Edwin. The Hajj Today: A Survey of the Contemporary Pilgrimage to Makkah. Albany: State University of New York Press, 1979.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLong, David Edwin. The Hajj Today: A Survey of the Contemporary Pilgrimage to Makkah. State University of New York Press, 1979.
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