Rishi, W. R. (1976). Roma: The Panjabi emigrants in Europe, central and middle Asia, the USSR, and the Americas. Punjabi University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRishi, W. R. Roma: The Panjabi Emigrants in Europe, Central and Middle Asia, the USSR, and the Americas. Patiala: Punjabi University, 1976.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRishi, W. R. Roma: The Panjabi Emigrants in Europe, Central and Middle Asia, the USSR, and the Americas. Punjabi University, 1976.
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