Cita APA (7a ed.)

World Health Organization & World Health Organization Contributor. (2011). Guideline. Vitamin A supplementation in infants 1-5 months of age. World Health Organization.

Cita Chicago Style (17a ed.)

World Health Organization y World Health Organization Contributor. Guideline. Vitamin A Supplementation in Infants 1-5 Months of Age. [Place of publication not identified]: World Health Organization, 2011.

Cita MLA (9a ed.)

World Health Organization y World Health Organization Contributor. Guideline. Vitamin A Supplementation in Infants 1-5 Months of Age. World Health Organization, 2011.