The Ultimate Bullworker Rep Range Workouts Book Three: The Best Isotonic Exercises to build muscle, increase strength, power and sculpt the best body with Isometrics! (Bullworker Power)

The Ultimate Bullworker Rep Range Workouts Book Three: The Best Isotonic Exercises to build muscle, increase strength, power and sculpt the best body with Isometrics!: 5 (Bullworker Power)

The Ultimate Bullworker Power Rep Range Workouts: Muscle-Enhancing Transformation Workouts That Build Your Body in Minutes A Day!: 3

The Ultimate Bullworker Power Rep Range Workouts Book Two: 4