Verkaaik, Oskar
VU University Press, 1994
Buku Teks
Olmstead, Clifton E., author
Prentice-Hall, 1960
Buku Teks
Brown, L. Carl, author
Columbia University Press, 2000
Buku Teks
Saunders, David, 1940-, author
Routledge, 1997
Buku Teks
Seo, Myengko, author
Routledge, Taylor & Francis Group, 2013
Buku Teks