1. Ho Ping-ti . Studies on the population of China, 1368–1953. Cambridge, Mass.: Harvard University Press, 1959.
2. West Stephen H. “Mongol influence on the development of northern drama.” In China under Mongol rule, ed. John D. Langlois Jr. Princeton, N.J.: Princeton University Press, 1981.
3. Yoshikawa Kōjirō . “Gen no shotei no bungaku”. In vol. 15 of Yoshikawa Kōjirō zenshū. Tokyo: Chikuma shobō, 1969.
4. Lao Yan-shuan . “Southern Chinese scholars and educational institutions in early Yüan: Some preliminary remarks.” In China under Mongol rule, ed. John D. Langlois Jr. Princeton, N.J.: Princeton University Press, 1981.
5. Gernet Jacques . Daily life in China on the eve of the Mongol invasion, 1250–1276. Trans. H. M. Wright . New York: Macmillan, 1962.