Jessica F. (flyngille) reviewed The Doula Advantage: Your Complete Guide to Having an Empowered and Positive Birth with the Help of a Professional Childbirth Assistant on
This book is very good for anyone who is not sure they want to have a doula (which I reccomend having one). It explains the different functions of a doula, how to find one and many personal accounts from doulas and the couples who have used them. I couldn't have done it without my doula!