Gu, Bon-wan, author
Korea Language PLUS, 2009
Buku Referensi
Chu, Gyong-hui, 1958-, author
Pijbook, 2009
Buku Teks
Komyunikeisyon Buksu, 2005
Buku Referensi
Kim, Jin-Hoo, author
Doseochulphan Bakijeong, 2011
Buku Teks
Lee, Mi-Hye, author
Pakijung, 2005
Buku Teks