Chosŏn sidae ch'aek ŭi munhwasa Samgang haengsilto rŭl t'onghan chisik ŭi chŏnp'a wa kwansŭp ŭi hyŏngsŏng - Chu, Yŏng-ha (Hyumŏnisŭt'ŭ Ch'ulp'an Kŭrup, 2008)