Campbell, B. M. S., author.
Cambridge University Press , 2016
Buku Teks
Porter, Anne, author
Cambridge University Press, 2011
Buku Teks
Green, J.R.
Routledge, 1994
Buku Teks
Silverstein, Adam J.
Cambridge University Press, 2007
Buku Teks
McLaurin, Brett T., author
Springer, 2012
eBooks