Sharp, G. (1973). The politics of nonviolent action: Part two. Porter Sergent Publishers.
Chicago Style (17th ed.) ZitazioaSharp, Gene. The Politics of Nonviolent Action: Part Two. Boston: Porter Sergent Publishers, 1973.
MLA (9th ed.) ZitazioaSharp, Gene. The Politics of Nonviolent Action: Part Two. Porter Sergent Publishers, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.