World Health Organization. (2011). The fourth ten years of the World Health Organization 1978-1987. World Health Organization.
Lua i Stíl Chicago (17ú heag.)World Health Organization. The Fourth Ten Years of the World Health Organization 1978-1987. Geneva: World Health Organization, 2011.
Lua MLA (8ú heag.)World Health Organization. The Fourth Ten Years of the World Health Organization 1978-1987. World Health Organization, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.