Cita APA (7th ed.)

United Nations & United Nations. Department of Public Information. (1990). The Blue helmets: A review of the United Nations peace-keeping (2nd ed.). United Nations. Dept. of Public Info.

Cita Chicago (17th ed.)

United Nations i United Nations. Department of Public Information. The Blue Helmets: A Review of the United Nations Peace-keeping. 2nd ed. New York: United Nations. Dept. of Public Info, 1990.

Cita MLA (9th ed.)

United Nations i United Nations. Department of Public Information. The Blue Helmets: A Review of the United Nations Peace-keeping. 2nd ed. United Nations. Dept. of Public Info, 1990.