APA (7th ed.) Zitazioa
International Labour Office & ebrary, Inc. (2005). Safety and health in ports. International Labour Office.
Chicago Style (17th ed.) Zitazioa
International Labour Office eta Inc ebrary. Safety and Health in Ports. Geneva: International Labour Office, 2005.
MLA (9th ed.) Zitazioa
International Labour Office eta Inc ebrary. Safety and Health in Ports. International Labour Office, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.