Yu Yŏn-san hyŏllyŏn ŭi kang ŭro kada
Subtitle: Yu Yŏn-san kwa kŭ ŭi chakp'um segye
By: Yu, Kwng-yŏp
Publisher: Yŏnbyŏn Inmin Ch'ulp'ansa
Published: 2010
Place of publication: Yŏn'gil
Language: kor