These research bibliographies are meant as introductory; by their brevity they are not comprehensive.
Only English sources are used. Each contains books, articles and sources that explain a topic. To build a broader bibliography we suggest that one look closely at the footnotes/endnotes and the bibliographies presented in entries in the recommended lists. Using references provided by others is the easiest and best way to create a specialized bibliography. We also suggest mining the institutes, think tanks, and educational institutions noted in Useful Links.