The Ultimate Bullworker Power Rep Range Workouts: Muscle-Enhancing Transformation Workouts That Build Your Body in Minutes A Day!, Paperback/Marlon Birch

The Bullworker Bible: The Ultimate Guide to the Bullworker, Paperback/Brian Sterling-Vete

The Ultimate Bullworker Power Rep Range Workouts Book Two, Paperback/Marlon Birch

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

The Ultimate Bullworker Power Pump Method: Bullworker Power Series - Marlon Birch

The Ultimate Bullworker Rep Range Workouts Book Three: The Best Isotonic Exercises to build muscle, increase strength, power and sculpt the best body, Paperback/Marlon Birch