World Health Organization. (1991). The Work of WHO in the Eastern Mediterranean Region: Annual Report of the Regional Director. World Health Organization Regional Office for the Eastern Mediterranean.
Chicago-referens (17:e uppl.)World Health Organization. The Work of WHO in the Eastern Mediterranean Region: Annual Report of the Regional Director. Egypt: World Health Organization Regional Office for the Eastern Mediterranean, 1991.
MLA-referens (9:e uppl.)World Health Organization. The Work of WHO in the Eastern Mediterranean Region: Annual Report of the Regional Director. World Health Organization Regional Office for the Eastern Mediterranean, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.