Παραπομπή APA

United, N. (2004). World investment report 2004: The shift towards services.

Παραπομπή Chicago Style

United, Nations. World Investment Report 2004: The Shift Towards Services. New York, United Nations, 2004.

Παραπομπή MLA

United, Nations. World Investment Report 2004: The Shift Towards Services. 2004.