SSidae wa chisŏngSidae wa chisŏngde Mun-yŏng Yi, Kyu-bok Chŏng, U-chʻang KimMateriasIntellectualsHigher EducationDemocracyEdiciones (1)Sidae wa chisŏng (1988)Minŭmsa · korMás obras de Mun-yŏng YiNNonŏ, Maengja wa haengjŏnghakNonŏ, Maengja wa haengjŏnghak199633.1 Undong esŏ pon haengjŏnghak3.1 Undong esŏ pon haengjŏnghakMMinju sahoerŭl wihan taehwa undongMinju sahoerŭl wihan taehwa undong