Cita APA (7th ed.)

Ball, J. H. (1943). Collective security: The why and how. World peace foundation.

Cita Chicago (17th ed.)

Ball, Joseph Hurst. Collective Security: The Why and How. Boston: World peace foundation, 1943.

Cita MLA (9th ed.)

Ball, Joseph Hurst. Collective Security: The Why and How. World peace foundation, 1943.