Vivekananda, Swami. The Message of our Master. Almora; Advaita Ashram. 1936.
Gandhi, Mahatma, No-violence and Aggression, London: Oxford University Press,1968.
Brain, C., Science and Man. New York: Macmillon.1965.
Dabre, Thomas.The God Experience of Saint Tukaram.Pune: Jnana- DeepaVidyapeeth,1987.