APA (7th ed.) Zitazioa

Herbert,Giersch. (1989). Services in world economic growth: Symposium 1988. Westview.

Chicago Style (17th ed.) Zitazioa

Herbert,Giersch. Services in World Economic Growth: Symposium 1988. Boulder: Westview, 1989.

MLA (9th ed.) Zitazioa

Herbert,Giersch. Services in World Economic Growth: Symposium 1988. Westview, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.