Sharp, G. (1980). The methods of nonviolent action. Boston: Porter Sargent.
Lua i Stíl Chicago (17ú heag.)Sharp, Gene. The Methods of Nonviolent Action. Boston: Porter Sargent, 1980.
Lua MLA (8ú heag.)Sharp, Gene. The Methods of Nonviolent Action. Boston: Porter Sargent, 1980.
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