1. Babson, B. O. (2001). North Korean economy today. In C. H. Yoon & L. J. Lau (Eds.), North Korea in transition: Prospects for economic and social reform (pp. 19–28). Cheltenham and Northampton: Edward Elgar Publishing.
2. Betts B. (2018 July 26). Saving North Korea’s wetlands . The Diplomat. Retrieved from https://thediplomat.com/2018/07/saving-north-koreas-wetlands/
3. The Guerilla Dynasty
4. CDM (2011a). Hamhung Hydropower Plant No.1 .
5. CDM (2011b). Kumya Hydropower Plant .