22 Jul 11

There are very many sources of information about the topics covered in this site. They include thousands of academic books and journal articles, some of which are cited in the
References. These references are to articles that cannot be downloaded directly; yo have to use a library to access them. Articles that can be downloaded are already linked to the relevant pages throughout this site.

There are also many web-sites published by professional or academic bodies. A representative set of these sites are linked under the following topic headings: