Chadwick, Richard W. 2006. “Korea 2020, National Security Futures, Development, Democracy, and Choices: Building a Korea Peace Structure.” Discussion paper. University of Hawaii, Honolulu, Hawaii.
Hughes, B. B., & Johnston, P. D. (2005). Sustainable futures: Policies for global development in a global knowledge society. Futures, 37(8), 813–831. https://doi.org/10.1016/j.futures.2005.01.017
United States National Intelligence Council (US NIC). 2004. Mapping the Global Future: Report of the National Intelligence Council’s 2020 Project. Washington, DC: United States National Intelligence Council.