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.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিIGU Symposium on Urban Geography in Developing Countries Varanasi এবং 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.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিIGU Symposium on Urban Geography in Developing Countries Varanasi এবং 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.