An, Kyong-hwa
Han'gugo kyoyuk ui yon'gu
Han'guk Munhwasa, 2007
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Kim, Yong Nan
Ono kyoyuk iron e pich'uo pon Han'gugo kyoyuk kyojae wa yon'gu
Sot'ong Ch'ulp'ansa, 2011
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Kwon, Jin-hong
Hanguko bisosulsong myongsa nonhang yongu
Yoklak, 2010
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Kim, Yong Son
Han'gugo/한국어 = Korean. 1-1
Inmun kwa Kyoyang, 2014
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Kim, Yong Son
Han'gugo/한국어 = Korean. 1-2
Inmun kwa Kyoyang, 2014
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