20 Segi hanguk soseol 20: Su Jung Lin, Park Tae Sun
Chang bi, 2005
Buku Teks
20 Segi hanguk soseol 30: Choi In Ho, Park Bom Shin
Chang BI, 2005
Buku Teks
20 Segi hanguk soseol 5
Choe Won-sik, Kim Yoo Jung, Chae Man Shik
Changbi, 2009
Buku Teks
20 Segi hanguk soseol 7
Choe Won-sik ... [et al.]
Changbi, 2007
Buku Teks
20 Segi hanguk soseol 47
[by] Gong Sun-ok ... [and others]
Chang bi, 2006
Buku Teks