A. J. Appasamy, Sundar Singh. (Cambridge: Lutterworth Press)
Janet and Geoff Benge, Sundar Singh: Footprints Over the Mountains (Seattle, WA: YWAM Publishing)
Cyril J.Davey, The Story of Sadhu Sundar Singh (Chicago, IL: Moody Press)
A. J. Appasamy, Sundar Singh. (Cambridge: Lutterworth Press)
Janet and Geoff Benge, Sundar Singh: Footprints Over the Mountains (Seattle, WA: YWAM Publishing)
Cyril J.Davey, The Story of Sadhu Sundar Singh (Chicago, IL: Moody Press)