APA aipamena

Freeman, C. (1983). Longwaves in the world economy. London: Butterworths.

Chicago Style aipamena

Freeman, Christopher. Longwaves in the World Economy. London: Butterworths, 1983.

MLA aipamena

Freeman, Christopher. Longwaves in the World Economy. London: Butterworths, 1983.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.