Oosterhoff, Jenneke A., author
Routledge, 2009
Buku Teks
Young-Key, author
Routledge, 2009
Buku Teks
Byon, Andrew Sangpil, author
Routledge, Taylor & Francis Group, 2009
Buku Teks
Woods, Geraldine, author
John Wiley & Sons, 2015
Buku Teks
Anderson, W.M. (Wendy M.), author
Wiley Publishing , 2013
Buku Teks