Online version: Yu, Kŭn-il, 1938- Chisŏng kwa pan chisŏng. 1-p'an. Sŏul : Kip'arang : Konggŭpch'ŏ Saemt'ŏsa, 2005 (2006 printing)
Online version: Yu, Kŭn-il, 1938- Chisŏng kwa pan chisŏng. 1-p'an. Sŏul : Kip'arang : Konggŭpch'ŏ Saemt'ŏsa, 2005 (2006 printing)