APA (7th ed.) Zitazioa
World Health Organization & ebrary, Inc. (2009). Guide to hygiene and sanitation in aviation (3rd ed.). World Health Organization.
Chicago Style (17th ed.) Zitazioa
World Health Organization eta Inc ebrary. Guide to Hygiene and Sanitation in Aviation. 3rd ed. Geneva: World Health Organization, 2009.
MLA (9th ed.) Zitazioa
World Health Organization eta Inc ebrary. Guide to Hygiene and Sanitation in Aviation. 3rd ed. World Health Organization, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.