Can't beat the harrington series for MTT's
On the cash side (no limit I presume) it's a bit trickier and nothing jumps out at me.... most of the books are specific for Limit and I think it's quite tricky to transfer to NL.....
If you wish to review books before buying them, got to
www.thepokerbay.org - they have an ultimate litterature collection you can download (torrents) which seem to include a lot of titles.....