You should number your footnotes sequentially throughout your document, starting at 1. However, there are a number of shorthand methods for providing repeat citations.
If you cite the same source multiple times sequentially, you can use 'ibid' to point the reader to the footnote immediately above the current one rather than repeating it in full.
You can have a "chain of ibids" if you refer to the same source in a series of footnotes...
...but only until that chain is broken (by a reference to a different source).
Example:
2 ibid
3 ibid
4 ibid
5 Phipps (n 31) 124.
(n X) refers the reader to a footnote earlier in your essay (but not immediately above).
X is the number of the original footnote.
You need to include: the author’s surname or an abbreviation of the case name and (n X).
Example:
10 MacCormick (n 3)
