Korea annual 1998 : 35th a comprehensive handbook on Korea
edited by Oh Chul-ho
Yonhap News Agency, 1998
 Buku Referensi
Korea annual 1984 : a comprehensive handbook on Korea, 21st annual edition
Yonhap News Agency, 1984
 Buku Referensi
Korea annual 1991 : a comprehensive handbook on Korea, 28th annual edition
Yonhap News Agency, 1991
 Buku Referensi
Korea annual 1994 : a comprehensive handbook on Korea, 31st annual edition
Yonhap News Agency, 1994
 Buku Referensi
A Handbook of Korea
edited by Kim Young-kwon, Lee So-jung
Korean Overseas Information Service, Ministry of Culture and Information, 1990
 Buku Referensi