APA (7th ed.) Citation

Westring, G. (1974). International procurement: A training manual. UNITAR.

Chicago Style (17th ed.) Citation

Westring, Gosta. International Procurement: A Training Manual. New York: UNITAR, 1974.

MLA (9th ed.) Citation

Westring, Gosta. International Procurement: A Training Manual. UNITAR, 1974.