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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)IGU Symposium on Urban Geography in Developing Countries Varanasi و 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)IGU Symposium on Urban Geography in Developing Countries Varanasi و 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.