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
Surfacing: A Poetic Journey of the Self, by Karuna Devi
108 Pearls of Wisdom, by Swami Chidanand