World Health Organization. (1996). Management of cataract in primary health care services. World Health Organization.
Citazione stile Chigago Style (17a edizione)World Health Organization. Management of Cataract in Primary Health Care Services. Geneva: World Health Organization, 1996.
Citatione MLA (9a ed.)World Health Organization. Management of Cataract in Primary Health Care Services. World Health Organization, 1996.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.