Patañjali.

• Yogasūtra
• The psychology of mystical awakening
• The Yoga-darshana
• Yoga Sutras
• An introduction to yoga philosophy
• Patañjali's yogasutras
• The Yoga-system of Patañjali
• Yoga vision
• Yoga-sūtras of Patañjali with the exposition of Vyasa
• Yogasūtra. English
• Aphorisms of Yôga
• Aphorisms of Yôga by Bhagwān Shree Patanjali