Roy, S. L. (1978). Diplomacy in ancient India, from the early Vedic period to the end of the sixth century A.D. A. Roy : distributors, Charu Pub. Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRoy, S. L. Diplomacy in Ancient India, from the Early Vedic Period to the End of the Sixth Century A.D. Calcutta: A. Roy : distributors, Charu Pub. Co., 1978.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRoy, S. L. Diplomacy in Ancient India, from the Early Vedic Period to the End of the Sixth Century A.D. A. Roy : distributors, Charu Pub. Co., 1978.
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