See Allo

Korea Annual 1971

Hapdong News Agency, 1971

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

Sin, Hyong-sik, author

A brief history of Korea

Ewha Womans University Press, 2005

Buku Teks

Ha, Tae Hung, author

Korea-forty three centuries

Yonsei University Press, 1962

Buku Teks