Author/organisation’s name, Year, Page title in italics, Retrieved: date accessed it, from: specific website address (best to copy and paste to ensure accuracy.)
Howard Hughes Medical Institute, 2005, RNA Diversity, Retrieved: October 30, 2008 from http://www.hhmi.org/biointeractive/rna/rnadiversity/index.html
If there’s no date?
Put [n.d.] where you would usually put the year. (This applies to all forms of resource where a date cannot be found.)
Surname, Initials. Year, ‘Article title in inverted commas’, Journal title in italics, volume or issue of publication as listed on the Journal or database record, page number, Retrieved: Date you accessed it, From: name of database you used to find the article.
Werner, K. 2004, ‘Human pharmacogenomics: The development of a science', Human Genomics, vol. 1, no. 5, pp. 375-381, Retrieved: October 30, 2008, from Proquest Biology Journals .