Roth, Philip, author
Vintage Books, 1997
Buku Teks
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