Sado Seja ŭi kobaek /

by Yi, Tŏg-il
Sŏul-si : Humanist, 2004
1-pʻan.

Chosŏn wang ŭl mal hada : Yi Tŏg-il yŏksa p'yŏngsŏl /

by Yi, Tŏg-il
Kyŏnggi-do Koyang-si : Yŏksa ŭi Ach'im, 2010
Ch'op'an.

Chosŏn wang toksal sakŏn /

by Yi, Tŏg-il
Sŏul-si : Tasan Chʻodang, 2009
Kaejŏng chŭngbopʻan.

Chosŏn wang toksal sakŏn : Choson wang toksalsŏl ŭl tullŏssan sumanŭn ŭihok kwa susukkekki /

by Yi, Tŏg-il
Sŏul-si : Tasan Chʻodang, 2005
Chʻopʻan.

Sado Seja ka kkumkkun nara : 250-yŏn man e ssŭnŭn Sado Seja ŭi myojimyŏng /

by Yi, Tŏg-il
Kyŏnggi-do Koyang-si : Yŏksa ŭi Ach'im, 2011
Ch'op'an, kaejŏngp'an.