The following sites have material that will assist you to understand the key ideas and to write your essay. In no particular order, it includes general philosophy, ethics, and specialist sites.
http://ethics.acusd.edu/index.html
http://www.etsu.edu/ethics/bset.htm
http://www-rohan.sdsu.edu/faculty/corlett/se.html
The Society for Ethics is an academic society that seeks to promote philosophical research in ethics without promoting a particular ideological creed or agenda, except that of research excellence in ethics.
Beauchamp & Bowie. Ethical Theory and Business. Textbook web site.
http://cwx.prenhall.com/bookbind/pubbooks/beauchamp/
http://www.gla.ac.uk/Acad/Philosophy/Lenman/bib.html
Produced by James Lenman, Philosophy Department of the University of Glasgow.
Organised by authors surname (not subject). Links paper-based articles and sources – couldn’t see links to electronic versions of these articles.
http://truth.wofford.edu/~kaycd/ethics/index.html
From the online course-book “Business Ethics” compiled by Professor Charles Kay, Wofford College.
http://www.utm.edu/research/iep/
The encyclopaedia is a combination of articles from three sources (1) adaptations from public domain sources, (2) adaptations of material written by the editor for classroom purposes, and (3) original contributions by professional philosophers around the internet. It arranged alphabetically by subject.
Searchable, dynamic encyclopaedia. Still being developed.
http://www.utm.edu/research/iep/philtext.htm
Some classic philosophical texts are available in HTML, text, and RTF formats.
Brown Electronic Article Reviews Service
http://www.brown.edu/Departments/Philosophy/bears/homepage.html
Searchable reviews of published articles in moral and political philosophy.
The editors state:- “It is not a substitute for articles, but neither is it a mere addition to an already undigestible volume of published material. It enhances the value of ordinary journal articles by providing an immediate, high quality, and fully public critical notice not available in any other form.”
http://www.philsoc.freeserve.co.uk/index.html
“In 1913 a number of professional scholars and amateur philosophers founded The Philosophical Society of England 'to promote the study of practical philosophy among the general public'. The Society helps to bring together professional philosophers and non-professionals, to bring philosophical ideas and problems to the public attention, and to encourage wider discussion of both traditional and topical philosophical issues.
http://www.the-philosopher.co.uk/
“The Philosopher is the oldest general Philosophy Journal in the world. It provides a forum for short, original, brilliant and accessible articles (and, it is true, space for a few rather less good ones!). The Philosopher believes in principle anything can be made clear to the interested reader.
http://condor.depaul.edu/ethics/ethg1.html
http://hippias.evansville.edu/
Hippias is a peer-reviewed search engine that provides access to philosophy-related resources on the World-Wide Web. Quality is controlled by a system of hyperlinked internet sites which are managed by qualified professionals who serve as the associate editors of the project.
Searchable arrangement of philosophical resources on the internet, managed by philosopher.
http://www.ethics.ubc.ca/resources/dec-mkg/
Ethical decision-making resources from the Centre for Applied Ethics.
http://users.ox.ac.uk/~worc0337/phil_index.html
Philosophy resources compiled by Dr Peter J. King of St Hilda's College, Oxford
Literature on Utilitarian Ethics (From Ethics Update website)
http://ethics.acusd.edu/utilitarianism.html
Includes links to classical sources by Jeremy Bentham, John Stuart Mill, Mary Wollstonecraft, William Godwin and Henry Sidgwick.
http://www.la.utexas.edu/cuws/index.html
Page of links to works by Jeremy Bentham, John Stuart Mill and Henry Sidgwick compiled by Dan Bonevac, Department of Philosophy, University of Texas at Austin.
http://www.utilitarianism.com/
http://www.utilitarian.org/one.html
http://truth.wofford.edu/~kaycd/ethics/util.htm
From the online course book “Business Ethics” compiled by Professor Charles Kay, Wofford College.
http://ethics.acusd.edu/kant.html
From the Ethics Update website, includes links to specific websites on Kant.