APA-referens (7:e uppl.)

Sorsa, P. (1994). Regional integration and the Baltics: Which way? World Bank.

Chicago-referens (17:e uppl.)

Sorsa, Piritta. Regional Integration and the Baltics: Which Way? Washington, D.C: World Bank, 1994.

MLA-referens (9:e uppl.)

Sorsa, Piritta. Regional Integration and the Baltics: Which Way? World Bank, 1994.