Centre for Contemplative Learning and Research
- Raja Yoga by Swami Vivekananda
- Light on the Yoga Sutras of Patanjali by B. K. S Iyengar
- Science of Yoga by I.K. Taimni
- The Path of Yoga: Commentaries on the Yoga Sutras of Patanjali by Osho
- Yoga Pradipika Web Site
- James Nestor, James. Breathe: The New Science of a Lost Art
- Michael J Stephen, MD - BREATH TAKING: The Power, Fragility, and Future of Our Extraordinary Lungs
- THE WIM HOF METHOD