Kyŏngje wigi e ttarŭn ch'wiyak kyech'ŭng ŭi pyŏnhwa silt'ae wa sahoe anjŏnmang p'yŏngka mit hyanghu taech'aek panganYu-jin Yŏ, T'ae-wan Kim, Su-jŏng Kim, Ch'i-ho Song · First published 2010Open the Tome