APA (7e ed.) Bronvermelding

Balassa, B. A. (1991). Economic integration in Eastern Europe. Office of the Vice President, World Bank.

Chicago (17e ed.) Bronvermelding

Balassa, Bela A. Economic Integration in Eastern Europe. Washington, D.C: Office of the Vice President, World Bank, 1991.

MLA (9e ed.) Bronvermelding

Balassa, Bela A. Economic Integration in Eastern Europe. Office of the Vice President, World Bank, 1991.