APA

Ackerman P., Du Vall, . (2000). A force more powerfull: a century of nonviolent conflict. New York: Palgrave.

Chicago

Ackerman Peter, Du Vall, . 2000. A force more powerfull: a century of nonviolent conflict. New York: Palgrave.

Harvard

Ackerman P., Du Vall, . (2000). A force more powerfull: a century of nonviolent conflict. New York: Palgrave.

MLA

Ackerman Peter, Du Vall, . A force more powerfull: a century of nonviolent conflict. New York: Palgrave. 2000.