Chŏnt'ong sidae sahaeng ŭro pon Tong Asia kukche kwan'gyeYu-suk Yun · First published 2020Open the Tome
Munhwajŏk t'eksŭt'ŭ rosŏŭi Han'guk kwa Ilbon hyŏndae op'eraHŭi-suk O, Sang-in Yun, Yu-gyŏng Son · First published 2020Open the Tome
Ullŭngdo Tokto Ilbon saryojipKim, Kang-il (Historian), Yu-suk Yun · First published 2012Open the Tome