Routledge, 2017
eBooks
Palasri, Sirin, author
University of Oregon Books, 1999
Buku Teks
Cook, Chris, author
Routledge, 2005
Buku Teks
edited by Catherine Spooner, Emma McEvoy
Routledge, 2007
Buku Teks
LaQuey, Tracy, author
Addison-Wesley, 1995
Buku Teks