We know that we have already placed a link to the TOK website on this topic, but it does no harm to repeat ourselves, especially as you are embarking on your Extended Essays. Writing footnotes is a minefield of punctuation and phrasing and can be extremely difficult to grapple with.
Spend some time thinking about WHY we use footnotes and HOW we can make the footnotes in our essay an efficient and integral part of writing.
REMEMBER: clear footnotes reflect the clarity of your mind and are also a preventative to plagiarism.
The first impressions you make in your essays are always the most important - an examiner worth his salt will always check first the quality of your footnotes and Bibliography (along with the introduction and conclusion) and will be able to tell the quality of the work at hand.
Go to: http://ibtokspot.googlepages.com/Footnotes.pdf