APA aipamena

Curzon, G. (1970). Hidden Barriers to International Trade. London: Trade policy research centre.

Chicago Style aipamena

Curzon, Gerard. Hidden Barriers to International Trade. London: Trade policy research centre, 1970.

MLA aipamena

Curzon, Gerard. Hidden Barriers to International Trade. London: Trade policy research centre, 1970.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.