You really don't need a book if you have access to the internet, as evidenced above.
You can also make your own jelly rolls. Or get together with some quilting buddies share the cost of the material. a jelly roll is 40 - 2 1/2" strips width of fabric. You can use anywhere from 10 to 40 different fabrics. You could use some ombre fabric and that would give you the sensation of shades of the same color.