20 Segi hanguk soseol 5
Choe Won-sik, Kim Yoo Jung, Chae Man Shik
Changbi, 2009
 Buku Teks
20 Segi hanguk soseul 8 : Memilkot pil muryeob, gimgangsawa tgyosu, kkeoraei, hasudo gongsa mo beomgyeongjuk saeng
Park Yung Jun, Lee Hyo Suk, Yu Jin O, Lee Mu Yung, Park Shin Ae, Park Hwa Sung
Changbi, 2009
 Buku Teks
20 Segi hanguk soseol 12 : Nam saeng yi, bil sageuro, jandeung, jimaeh
Kim Su Ryang, Heo Jun, Hyun Duk, Choi Jung Hae
Changbi, 2009
 Buku Teks
20 Segi hanguk sosol 23: Dangje, heureu neun buk, manculdanggi
Changbi, 2005
 Buku Teks
Choe, Won-sik, author
20 Segi hanguk soseul 6
Changbi, 2009
 Buku Teks