Title: Unhak Sŏnsaeng munjip /
Authors: Cho, Pʻyŏng.; Yi, Yuk.; Munjip Pʻyŏnchʻan Wiwŏnhoe (Korea)
Publisher: Munjip Pʻyŏnchʻan Wiwŏnhoe : Kyŏngin Munhwasa : konggŭpchʻŏ Hanʾguk Chʻulpʻan Hyŏptong Chohap,
Year: 1999