Yu, Yon-thae, author
Naenara suwil thoyo haeng : 3040 el wihan yohaeng ui hyanggi
Book I, 2007
 Buku Referensi
Ko, Kyu-hong, 1960-, author
Yetchip ui hyanggi, namu
Tullyok, 2007
 Buku Teks
Sin, Myung-ho, author
Wang el wihan pyenmyung
Kimyoungsa, 2009
 Buku Teks
Kim, Tae-jun, 1939-, author
Hanguk ui yohaeng munhak
Ihwa Yoja Taehakkyo Chulpanbu, 2006
 Buku Teks
Nam, Yong Sin, 1948-, author
4 Junganui gugo yohaeng : gugo yohaeng el machi myon gelssegika
Seongandang, 2010
 Buku Teks
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