Richmond, O. P. (2018). Peace: A Very Short Introduction. Oxford University Press.
Cita Chicago (17th ed.)Richmond, Oliver P. Peace: A Very Short Introduction. Oxford University Press, 2018.
Cita MLA (9th ed.)Richmond, Oliver P. Peace: A Very Short Introduction. Oxford University Press, 2018.
Atenció: Aquestes cites poden no estar 100% correctes.