Cita APA (7th ed.)
(2020). Improving early childhood development: WHO guideline. World Health Organization.
Cita Chicago (17th ed.)
Improving Early Childhood Development: WHO Guideline. Ginebra: World Health Organization, 2020.
Cita MLA (9th ed.)
Improving Early Childhood Development: WHO Guideline. World Health Organization, 2020.
Atenció: Aquestes cites poden no estar 100% correctes.