Greenwood Press, 1986
Buku Referensi
Bustamante, Jorge, author
[, Springer], 2012
eBooks
John, D. M.
Cambridge University Press, 2011
Multimedia
Wandor, Michelene
Longman, 1993
Buku Teks
editor, David M. John [and others]
Cambridge University Press, 2011
Buku Referensi