Udy, Stanley H., 1928-, author
Prentice-Hall, 1970
Buku Teks
Agren, Maria, author
Oxford University Press, 2017
eBooks
Chong, Seong-mo, author
Ewha Womans University Press, 2006
Buku Teks
Chung, Seung-mo, author
Ewha Womans University Press, 2006
Buku Teks
Won, Yu-han, author
Ewha Womans University Press, 2006
Buku Teks