Cita APA (7th ed.)
World Health Organization & ebrary, Inc. (2009). Guide to hygiene and sanitation in aviation (3rd ed.). World Health Organization.
Cita Chicago (17th ed.)
World Health Organization i Inc ebrary. Guide to Hygiene and Sanitation in Aviation. 3rd ed. Geneva: World Health Organization, 2009.
Cita MLA (9th ed.)
World Health Organization i Inc ebrary. Guide to Hygiene and Sanitation in Aviation. 3rd ed. World Health Organization, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.