The Vital Breath: A Complete Guide to Pranayama Practice

Pranayama in a Nutshell: Breath, Vital Energy, and the Path to Inner Stillness

The Yoga of Breath: A Step by Guide to Pranayama

Pranayama the Science of Breath: Theory and Guidelines for Practice

Qigong and Pranayama Breathing: Techniques for Internal Energy Vitality: A Complete Guide...