WAllis, J. (1982). Waging peace. Harper & Row.
Cita Chicago (17th ed.)WAllis, Jim. Waging Peace. Sanfranciso: Harper & Row, 1982.
Cita MLA (9th ed.)WAllis, Jim. Waging Peace. Harper & Row, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.