APA (7th ed.) Citation

World Health Organization & Tarizzo, M. L. (1973). Field methods for the control of trachoma. World Health Organization.

Chicago Style (17th ed.) Citation

World Health Organization and M. L. Tarizzo. Field Methods for the Control of Trachoma. Geneva: World Health Organization, 1973.

MLA (8th ed.) Citation

World Health Organization and M. L. Tarizzo. Field Methods for the Control of Trachoma. World Health Organization, 1973.