The following books are either by Yogi Gupta or have been recommended by Yogi Gupta:
Yoga and Long Life, 2nd Edition, Kindle
Yoga and Long Life, 2nd Edition, Paperback
Yoga and Yogic Powers, 2nd Edition, Kindle
Yoga and Yogic Powers, 2nd Edition, Paperback
108 Pearls of Wisdom, by Swami Chidanand
Srimad Bhagavad Gita, by Swami Swarupananda