Cita APA (7a ed.)

Senghaas, D., & Osers, E. (2007). On perpetual peace: A timely assessment. Berghahn.

Cita Chicago Style (17a ed.)

Senghaas, Dieter, y Ewald Osers. On Perpetual Peace: A Timely Assessment. New York ; Oxford: Berghahn, 2007.

Cita MLA (9a ed.)

Senghaas, Dieter, y Ewald Osers. On Perpetual Peace: A Timely Assessment. Berghahn, 2007.