Tricky.
1.The Illuminatus Trilogy - Robert Shea and Robert Anton Wilson
2.Magician - Raymond E Feist
3.The Amber Spyglass - Phillip Pullman
4.Shards of a Broken Crown - Raymond E Feist
5.Tear of the Gods - Raymond E Feist
6.Abhorsen - Garth Nix
7.Guards! Guards! - Terry Pratchet
8.The Rats - James Herbert
9.The Silver Chair - C.S. Lewis
10.The Fellowship of the Ring - J.R.R. Tolkein.
Sorry if it's a bit late.