APA (7th ed.) Citation

World Health Organization. (1987). The Provision of spectacles at low cost. World Health Organization.

Chicago Style (17th ed.) Citation

World Health Organization. The Provision of Spectacles at Low Cost. Geneva: World Health Organization, 1987.

MLA (9th ed.) Citation

World Health Organization. The Provision of Spectacles at Low Cost. World Health Organization, 1987.

Warning: These citations may not always be 100% accurate.