References
- Cho , Yong H. and Kim , Young S. 1983 . The Challenge of Overpopulation and Public Policy: The Case of Metropolitan Seoul . Journal of East and West Studies , 12 Fall : 23 – 49 . Winter
- 1983 . Ibid , 12 Fall These data are outdated by ten years. However, the general pattern remains unchanged
- This number does not include two wheel vehicles.
- 1991 . Environmental Yearbook , 12 Fall
- 1989 . Seoul City Administration , 12 Fall : 205
- 1990 . The City of Seoul, The Current Environmental Conditions of Seoul , 12 Fall
- 1992 . The Korea Times , 23 July : 11B
- 1992 . The Korea Times , 4 July : 10B
- 1991 . Environmental Agency, The Environmental Yearbook , 4 July