The Yoga Sutras of Patanjali
Raja-Yoga & Patanjali Yoga-Sutra by Swami Vivekananda
The Science of Breathing
Hatha Yoga Pradipika Yoga Swami Svatmarama
Raja Yoga (Annotated Edition)
Karma Yoga (Annotated Edition)
Lectures on the Bhagavad Gita (Annotated Edition)
The Upanishads (Easwaran's Classics of Indian Spirituality)
The Science of Pranayama
The Bhagavad Gita (Easwaran's Classics of Indian Spirituality)