Ballou, Jec Aristotle 101 Western Dressage Exercises for Horse and Rider (1612121705)
This book - the very first on the topic - offers 101 fun and effective exercises that will improve every Western horse's suppleness, balance in movement, and responsiveness. Each exercise is presented with illustrated, step-by-step instructions and a full arena diagram, and exercises are organized by focus: softness, looseness, rider development, engagement, adjustability, and ground work. This book is the ultimate reference for this new sport.