APA aipamena

Jantzen, T. (1964). The Operation of a free trade area. Geneva: European free trade Association.

Chicago Style aipamena

Jantzen, Torben. The Operation of a Free Trade Area. Geneva: European free trade Association, 1964.

MLA aipamena

Jantzen, Torben. The Operation of a Free Trade Area. Geneva: European free trade Association, 1964.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.