Ch'ǒn, S. (1990). Kodae kugŏ-ŭi ŏhwi yŏn'gu (Ch'op'an.). Koryǒ Taehakkyo Minjok Munhwa Yǒn'guso Ch'ulp'anbu.
Chicago Style (17th ed.) CitationCh'ǒn, So-yǒng. Kodae Kugŏ-ŭi ŏhwi Yŏn'gu. Ch'op'an. Sǒul: Koryǒ Taehakkyo Minjok Munhwa Yǒn'guso Ch'ulp'anbu, 1990.
MLA (9th ed.) CitationCh'ǒn, So-yǒng. Kodae Kugŏ-ŭi ŏhwi Yŏn'gu. Ch'op'an. Koryǒ Taehakkyo Minjok Munhwa Yǒn'guso Ch'ulp'anbu, 1990.
Warning: These citations may not always be 100% accurate.