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.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)IGU Symposium on Urban Geography in Developing Countries Varanasi và 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.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)IGU Symposium on Urban Geography in Developing Countries Varanasi và 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.