Cita APA

United Nations. Economic Commission for Europe & United Nations. Working Party on International Contract Practices in Industry. (1990). International counterpurchase contracts. United Nations.

Citación estilo Chicago

United Nations. Economic Commission for Europe and United Nations. Working Party on International Contract Practices in Industry. International Counterpurchase Contracts. New York: United Nations, 1990.

Cita MLA

United Nations. Economic Commission for Europe and United Nations. Working Party on International Contract Practices in Industry. International Counterpurchase Contracts. United Nations, 1990.