힘내라,동서남북
Subtitle: Yu Sun-ha changpʻyŏn chʻangjak tonghwa
Edition: Chʻopʻan.
Publisher: Koryŏwŏn Midiŏ
Published: 1992
Place of publication: Sŏul
Language: kor
Number of pages: 240
Other titles: Him naera, Tongsŏ Nambuk