Quick & Easy Betta Care
I'm not actually going to review this book. It was published by tfhpublications as a quick and dirty kind of cheap solution. What it actually is is "Bettas A Complete Introduction" with incorrect statements added and all of the wonderful first hand information scrubbed. Don't bother buying this book. Spend the extra few dollars and pick up "Bettas A Complete Introduction" by Walt Maurus.
Here is my review on that book: Book Review: Bettas a Complete Introduction