20 Segi hanguk soseul 24: Usang eui, nun mul, abe eui gajok, ribbattong janggun, julmjurinhan
Chang bi, 2005
 Buku Teks
20 Segi hanguk soseul 32: Cheong sandaek, haegu, nunim-eui chosang, mokseon
Changbi, 2005
 Buku Teks
Choe, Won-sik, author
20 Segi hanguk soseul 6
Changbi, 2009
 Buku Teks
20 Segi hanguk soseul 34: Meon geudae: bong sunga kkot mul: nae sachan byeol jeong uchegukjang: don hwang-e sarang
Changbi, 2005
 Buku Teks
20 Segi hanguk soseul 42 : Dangsine daehaesea, gongjungnugak, gu phyeongmok ssieui bakhuibeolle, seupheumeui norae, syagaleui macule naerineun nun, ai
Lee In Sing; Choi Su Chul; Lee Seung Woo; Jung Chan; Park Sang Woo; Jang Jung Il
Changbi, 2006
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