The Yoga Sutras of Patanjali, the foundation text of Raja Yoga, one of the six orthodox astika schools of Hindu philosophy. The 196 sutras are divided into four forms – Mantra Yoga, Laya Yoga, Hatha Yoga and Raja Yoga – the last of which is the highest (or royal) practice.
The Yoga Science of Breath
Yogi Ramacharaka
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The Nature and Practice of Yoga
Annie Besant
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The Raja Yoga: A Series of Lessons
Yogi Ramacharaka
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The Hatha Yoga Pradipika
Swami Swatmarama
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The Yoga Sutras of Patanjali: The Book of the Spiritual Man
Maharishi Patanjali
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The Yoga of Wisdom: Lessons in Gnani Yoga
Yogi Ramacharaka
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The Ethos and Methods of Yoga
Swami Mukerji
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