Rao, B. (1971). Bisakhapatnam: A study in geography of port town, ed. by R.L. Singh. National Geographical Society of India.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRao, B.P. Bisakhapatnam: A Study in Geography of Port Town, Ed. by R.L. Singh. National Geographical Society of India, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRao, B.P. Bisakhapatnam: A Study in Geography of Port Town, Ed. by R.L. Singh. National Geographical Society of India, 1971.
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