Powers, Roger S. ; Vogele, William B. ; Kruegler, Christopher ; McCarthy, Ronald M., Protest, Power and Change. An Encyclopaedia of Nonviolent Action from ACT-UP to Women’s Suffrage , New York, Garland, 1997, pp. 610 Valuable guide to both the theory and practice of nonviolence, summarizing 104 nonviolent campaigns and actions, listing methods of protest, and examining relevant organisations and personalities.