The Yoga Tradition
Le Mystère de la Lumière
The Deeper Dimension of Yoga
The Essence of Yoga
Tantra
The Philosophy of Classical Yoga
Wholeness Or Transcendence?
Yoga Morality
Lucid Waking
The Encyclopedia of Yoga and Tantra
The Shambhala Encyclopedia of Yoga
Tantra
The Psychology of Yoga
Structures of Consciousness