[en] Stretching Your Boundaries · Flexibility Training for Extreme Calisthenic Strength Dragon Door Publications
[en] Raising the Bar Dragon Door Publications
[en] We're Working Out! A Zen Approach to Everyday Fitness Muscle-Up Books
[en] Stretching Your Boundaries · Flexibility Training for Extreme Calisthenic Strength Dragon Door Publications
[en] Raising the Bar Dragon Door Publications
[en] We're Working Out! A Zen Approach to Everyday Fitness Muscle-Up Books