Essay Writing for Students in Politics and the Social Sciences by David W. Lovell and Rhonda Moore: http://www.pol.adfa.edu.au/resources/essay_writing/contents.html a useful online guide to writing for the social sciences.

Ethics: http://csf.colorado.edu/sristi/diversity.html provides useful information on relevant ethical issues.

IDS: http://www.ids.ac.uk This new online service offers hundreds of summaries of problem-solving work on critical development dilemmas around the world.