Right now there is only one book available by Dave Roberson, but it is a book used by God to transform believers' lives in extraordinary ways.
If you want your life to change, or if you just want to increase your understanding about this phenomenon of praying in tongues, read "The Walk of the Spirit - The Walk of Power."
Its taken me a while to read as i am a mum and work full time but once i started reading this book i always had to go back to it. While reading each session i can feel Holy Spirit coming upon me and speaking to me.
This book has reaffirmed any doubts i may have had and has helped to strengthen my walk with Jesus.