Other works related to the topic Ackerman, Peter and Jack DuVall, A Force More Powerful: A Century of Nonviolent Conflict, Palgrave, New York, 2000.
أعمال أخرى تتعلق بالموضوع Ackerman, Peter and Jack DuVall, A Force More Powerful: A Century of Nonviolent Conflict, Palgrave, New York, 2000.