Does anyone have suggestions/advice or a reliable link that can explain how to cite websites?

I've found many cites that offer formats but they all seem to assume that there is a visible author of the website. I need to cite information taken from a website that has no apparent author.

Anyone?

Thanks!

This is the best site I've found:

http://library.curtin.edu.au/research_and_information_skills/referencing/harvard.pdf

Does the website referencing look appropriate for our MA work?