Dubin, Fraida, author
Cambridge University Press, 1986
Buku Teks
Lado, Robert
University of Michigan, 1957
Buku Teks
Lee, Kay Won
Hanguk Munhwasa, 2007
Buku Teks
edited by Bernhard Kettemann and Robert N. St. Clair
Gunter Narr Verlag Tubingen, 1980
Buku Teks
Allen, Edward David, author
Harcourt Brace Jovanovich, [Date of publication not identified]
Buku Teks