APA aipamena

Haberler, G. International Trade Economic Development Gottfried Haberler. s.n.

Chicago Style aipamena

Haberler, Gottfried. International Trade Economic Development Gottfried Haberler. s.n.

MLA aipamena

Haberler, Gottfried. International Trade Economic Development Gottfried Haberler. s.n.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.