APA (7e ed.) Bronvermelding
World Health Organization. (2019). World report on vision. World Health Organization.
Chicago (17e ed.) Bronvermelding
World Health Organization. World Report on Vision. Ginebra: World Health Organization, 2019.
MLA (9e ed.) Bronvermelding
World Health Organization. World Report on Vision. World Health Organization, 2019.
Let op: Deze citaties zijn niet altijd 100% accuraat.