Cita APA (7th ed.)

Bellamy, A. J. (2019). World peace: And how we can achieve it (NA.). Oxford.

Cita Chicago (17th ed.)

Bellamy, Alex J. World Peace: And How We Can Achieve It. NA. UK: Oxford, 2019.

Cita MLA (9th ed.)

Bellamy, Alex J. World Peace: And How We Can Achieve It. NA. Oxford, 2019.