Cita APA (7a ed.)

Wallensteen, P. (2009). Understanding conflict resolution: War, peace and the global system (2nd ed.). Sage.

Cita Chicago Style (17a ed.)

Wallensteen, Peter. Understanding Conflict Resolution: War, Peace and the Global System. 2nd ed. Los Angeles [etc.]: Sage, 2009.

Cita MLA (9a ed.)

Wallensteen, Peter. Understanding Conflict Resolution: War, Peace and the Global System. 2nd ed. Sage, 2009.