Kwŏn Ch'ir-in, Chŏng-hwa Ŏm, So-ri Mun, Min-su Cho, Kyŏng-yŏng Yi, and Myŏng P'illŭm. 2014. <i>Kwannŭng ŭi pŏpch'Ik</i>. . . . (Chu) Pidio Yŏhaeng. .