Dean, Howard H.
Prentice-Hall, 1962
Buku Teks
Bak, Yeong-Sun, author
Goryeodaehaggyochulpanbu, 2010
Buku Teks
Gwon, Jae-Il (권재일), author
Park I-Jeong, 2001
Buku Teks
Gummere, John Flagg
Scott, Foresman and Company, 1955
Buku Teks
Hewings, Martin, author
Cambridge University Press, 2005
Buku Teks