Manning, Christopher D., author
Cambridge University Press, 2008
Buku Teks
Salton, Gerard, author
McGraw-Hill, 1983
Buku Teks
Chowdhury, G.G., author
Facet Publishing , 2004, 2006
Buku Teks
Chowdhury, G.G., author
Library Association Publishing, 1999
Buku Teks
Rowley, J.E., author
Ashgate, 1992
Buku Teks