Light on the Yoga Sutras of Patanjali: The Essential Handbook of Pranayama, Asana, and Hindu Meditation
Thinking with the Yoga Sutra of Patañjali: Translation and Interpretation (Explorations in Indic Traditions: Theological, Ethical, and Philosophical)
Inside the Yoga Sutras: A Comprehensive Sourcebook for the Study & Practice of Patanjali's Yoga Sutras