Coyle, Karen, author
an imprint of the American Library Association, 2016
Buku Teks
Indiana Purdue University Press, 2014
Buku Teks
Jones, Richard, author
Chandos Publishing, 2006
Buku Teks
Prytherch, Ray, compiler
Gower, 2000
Buku Referensi
Stern, David, author
Chandos, 2013
eBooks