Citazione Stile APA (7a Edizione)
(1980). World health statistics annual 1980: Health personnel and hospital establishments. World Health Organization.
Citazione stile Chigago Style (17a edizione)
World Health Statistics Annual 1980: Health Personnel and Hospital Establishments. Genéve: World Health Organization, 1980.
Citatione MLA (9a ed.)
World Health Statistics Annual 1980: Health Personnel and Hospital Establishments. World Health Organization, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.