It's in The John Renbourn Guitar Book, which was published back in the 70s by (?)Oak Publications. I've mentioned this already in the other recent Lady Nothyng thread, but: Somewhere buried in my flat I do have this book, though a recent search failed to turn it up (never can find anything when I want it, grumble, growl). The piece is in music notation, not tabs, and has no words. If you PM me with some sort of postal address, and IF I can find the wretched thing, I'll post you a photocopy (if!!!). The whole book is great, with lots of other good material in a similar vein.