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
Bang, Hyeon Seok
20 Segi hanguk soseol 46
Chang bi, 2006
Buku Teks
Lee, Sang
20 Segi hanguk soseol 9
Chang BI, 2005
Buku Teks
20 Segi hanguk soseol 7
Choe Won-sik ... [et al.]
Changbi, 2007
Buku Teks