UNICEF & Bellamy, C. (2001). The state of the world's children 2001: Early childhood. UNICEF.
Cita Chicago (17th ed.)UNICEF i Carol Bellamy. The State of the World's Children 2001: Early Childhood. New York: UNICEF, 2001.
Cita MLA (8th ed.)UNICEF i Carol Bellamy. The State of the World's Children 2001: Early Childhood. UNICEF, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.