APA (7 वां संस्करण) प्रशस्ति पत्र

Singh, O. P. (1976). Surat and its trade in the second half of the 17th century. Publication Division, University of Delhi.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Singh, O. P. Surat and Its Trade in the Second Half of the 17th Century. Delhi: Publication Division, University of Delhi, 1976.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Singh, O. P. Surat and Its Trade in the Second Half of the 17th Century. Publication Division, University of Delhi, 1976.

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