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↑ Eleanor Zelliot (2005), "UNTOUCHABILITY", ใน Maryanne Cline Horowitz (ed.), New Dictionary of the History of Ideas, 6, Thomson Gale, pp. 2394–2397, ISBN0-684-31383-9
↑ Saurabh Dube (2005), "UNTOUCHABLES, RELIGIONS OF", ใน Lindsay Jones (ed.), Encyclopedia of Religion, 14 (2nd ed.), Thomson Gale, pp. 9474–9478, ISBN0-02-865983-X
↑ Alf Hiltebeitel (2005), "HINDUISM", ใน Lindsay Jones (ed.), Encyclopedia of Religion, 6 (2nd ed.), Thomson Gale, pp. 3988–4009, ISBN0-02-865739-X
