Fricke, Martin, author
Springer, 2012
eBooks
Svenonius, Elaine, author
MIT Press, 2000
Buku Teks
Taylor, Arlene G., author
Libraries Unlimited, Inc., 1999
Buku Teks
Caplan, Priscillia, author
American Library Association,, 2003
Buku Teks
Batley, Sue,a uthor
Chandos Publishing, 2007
Buku Teks