Korea Annual 1971
Hapdong News Agency, 1971
Buku Teks
Korea Annual 1974
Hapdong News Agency , 1974
Buku Teks
Korea the best kept secret in Asia Korea National Tourism Corporation
Korea National Tourism Corporation, 1986
Buku Teks
Jon, Sang-un, author
Historica Han'guksa vol. 2,3 = Korea Science History
Ikkullio, 2009
Buku Referensi
Ha, Tae Hung, author
Korea-forty three centuries
Yonsei University Press, 1962
Buku Teks
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