Yogi Ramacharaka

Pranayama

Cristianità mistica volume 2

Cristianità mistica volume 1

Mystic Christianity

A Series of Lessons in Raja Yoga : Illustrated Edition

The Science of Psychic Healing

Mystical Christianity: The Inner Teachings of the Master

Science of Breath

Science of Breath: A Complete Manual of the Oriental Breathing Philosophy of Physical, Mental, Psychic and Spiritual Development

The Yoga Science of Breath

The Raja Yoga: A Series of Lessons

The Yoga of Wisdom: Lessons in Gnani Yoga