Kugyŏk "Ch'ŏnggye Chung-Il-Han kwan'gye saryo" - Kim, Hyŏng-jong (Sŏul-si Tongbuga Yŏksa Chaedan, 2012)
In Korean and Chinese.
Keywords: China -- Foreign relations -- Korea -- Sources; Korea -- Foreign relations -- China -- Sources; China -- Foreign relations -- Japan -- Sources; Japan -- Foreign relations -- China -- Sources