I purchased a book called "Pioneers of English Folk Guitar" published by Wise Publications. I initially bought it because it had the full tab and notation for Richard Thompson's 1952 Vincent Black Lightning in it, but was very pleased to find, when it arrived that it had the full tab and notation for Nic's Canadee-i-o in it, all accurate too!
I did struggle with the click/slap sound technique in the song, but that was straightened thanks to Sam Carter uploading a video of tips on playing the song to Youtube!
For those interested, here is the ISBN No for the book - ISBN 978-1-78038-199-2
And here is a link to Sam's video of tips!
http://www.youtube.com/watch?v=oAOny7J33Lk
I hope this helps!