Kim, Seung kyung, author
Taylor & Francis Group, 2014
Buku Teks
Kandil, Hazem, author
Oxford University Press, 2016
eBooks
Baldridge, J. Victor, author
John Wiley & Sons, 1980
Buku Teks
Wang, James C.F., author
Prentice-Hall, 1994
Buku Teks
Maguire, Marie
Routledge, 1995
Buku Teks