Kaplan, Jeffrey P., author
Prentice Hall International, 1995
Buku Teks
Langone, John
Brown , 1991
Buku Teks
Soul Korean Quersen Information Service 1989,
Buku Teks
edited by Elizabeth Tootill
Facts on File, 1981
Buku Referensi
editor Ruth D. Whitehouse
Facts On File Publications, 1983
Buku Referensi