Cita APA

United Nations Industrial Development Organization. (1972). A guide to industrial purchasing. United Nations.

Citación estilo Chicago

United Nations Industrial Development Organization. A Guide to Industrial Purchasing. New York: United Nations, 1972.

Cita MLA

United Nations Industrial Development Organization. A Guide to Industrial Purchasing. New York: United Nations, 1972.

Precaución: Estas citas no son 100% exactas.