IGU Symposium on Urban Geography in Developing Countries Varanasi & Singh, R. L. (1973). Urban geography in developing countries: Proceedings of I.G.U. Symposium no. 15, Varanasi, November 22-29, 1968. National Geographical Society of India.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIGU Symposium on Urban Geography in Developing Countries Varanasi और R. L. Singh. Urban Geography in Developing Countries: Proceedings of I.G.U. Symposium No. 15, Varanasi, November 22-29, 1968. Varanasi: National Geographical Society of India, 1973.
एमएलए (8वां संस्करण) प्रशस्ति पत्रIGU Symposium on Urban Geography in Developing Countries Varanasi और R. L. Singh. Urban Geography in Developing Countries: Proceedings of I.G.U. Symposium No. 15, Varanasi, November 22-29, 1968. National Geographical Society of India, 1973.