APA Citation

Corporations, U. N. C. o. T. (1990). Directory of The World's Largest Service Companies. New York:United Nations.

Chicago Style Citation

Corporations, United Nations Centre on Transnational. Directory of The World's Largest Service Companies. New York:United Nations, 1990.

MLA Citation

Corporations, United Nations Centre on Transnational. Directory of The World's Largest Service Companies. New York:United Nations, 1990.

Warning: These citations may not always be 100% accurate.