Cita APA (7th ed.)
World Health Organization. (2019). World report on vision. World Health Organization.
Cita Chicago (17th ed.)
World Health Organization. World Report on Vision. Ginebra: World Health Organization, 2019.
Cita MLA (9th ed.)
World Health Organization. World Report on Vision. World Health Organization, 2019.
Atenció: Aquestes cites poden no estar 100% correctes.