This book has nothing to do with sourdough, but it is a marvelous pizza resource. The dough recipes are easy to convert to sourdough, and the results are spectacular.
Having trouble with your pizza crust? Chances are Pasquale Bruno, Jr. explains the problem in his book.
isbn.nu can help you find two different editions, at vastly different price points. An inexpensive paper back or a much pricier paperback. I've only seen the less expensive book, and it was just fine.