Cita APA (7th ed.)

Wallensteen, P. (2011). Peace research: Theory and practice. Routledge.

Cita Chicago (17th ed.)

Wallensteen, Peter. Peace Research: Theory and Practice. London: Routledge, 2011.

Cita MLA (9th ed.)

Wallensteen, Peter. Peace Research: Theory and Practice. Routledge, 2011.