Here is a list of recommended books
Don Jitsu Ryu : Flesh And Bone
Road map to becoming a Purple Dragon Black Belt by Grand Master Professor Don Jacob
Click here for Kindle Version
Please contact your local Purple Dragon dojo to get your copy today.
Fighting Mans Bible
New book by professor Don Jacob
Purchase
High Impact Jujitsu
The Tao of Don Jitsu Ryu
By Shihan Albert Andrews