1. METROPOLITAN AREA DEFINITION IN THE UNITED STATES
2. Bureau of Hukou Administration (Ministry of Public Security) 1997. Tabulations of the National Temporary Population Statistics. China Peoples' University of Public Security Press: Beijing.
3. 1996. The Informational Age. Blackwell: Oxford.
4. Central Committee of CCP (Chinese Communist Party) and State Council. 1963. A directive on the adjustment of city and town designation and the reduction of suburban areas of cities. 7 December 1963. Beijing.
5. Urbanization and Rural- Urban Migration in China since 1982