update 30/6/2010
Style Guides
AMA Style
http://healthlinks.washington.edu/hsl/styleguides/ama.html
http://libraries.evansville.edu/style/ama.html
APA Style
http://www.apastyle.org/
http://owl.english.purdue.edu/handouts/research/r_apa.html
http://www.bedfordstmartins.com/online/cite6.html
Chicago Style
http://www.wisc.edu/writing/Handbook/DocChicago.html
http://www.bedfordstmartins.com/online/cite7.html
http://www.lib.ohio-state.edu/guides/chicagogd.html
http://www.lib.ohio-state.edu/guides/chicago.pdf
http://www.chicagomanualofstyle.org/home.html
Columbia Style
http://cup.columbia.edu/book/978-0-231-13210-7/the-columbia-guide-to-online-style
CSE Style
http://www.bedfordstmartins.com/online/cite8.html
http://www.lib.unc.edu/instruct/citations/cse/
Harvard Style
http://libweb.anglia.ac.uk/
http://libweb.anglia.ac.uk/referencing/files/Harvard_referencing.pdf
Modern Language Association (MLA) Style
http://owl.english.purdue.edu/handouts/research/r_mla.html
http://campusgw.library.cornell.edu/newhelp/res_strategy/citing/mla.html
http://www.bedfordstmartins.com/online/cite5.html
Turabian Style
http://www.lib.ohio-state.edu/guides/turabiangd.html
Vancouver Style
http://www.lib.monash.edu.au/tutorials/citing/vancouver.html
http://www.library.uq.edu.au/training/citation/vancouv.pdf
AMA
Style