These 3 books are my Trinity. Everybody playing any instrument should read these !
And you can add to these book the "bassline workshop" DVD from Victor Wooten. Really intersting, opening musical mind !!!
And just to precise: the "bassline workshop" DVD is a masterclass from Wooten & Wellington bringing a practical aspect from concept Wooten has written in "the music lesson". Good to read the book, then work with the DVD, even if you can use one standalone of the other one.