Cho Dong-wha ... [et al.]
Korean Information Service, 2001
Buku Teks
So, Jung-sok
Yeoksabipyeongsa, 2008
Buku Teks
Kang, Man-Gil
Global Oriental, 2005
Buku Teks
Lee, Son-i, 1967-
Hanguk moon hwasa, 2007
Buku Referensi
Cornell University Press , 1993
Buku Teks