Copple, C. (1991). Quality matters: Improving the professional development of the early childhood work force. National Institute for Early Childhood Professional Development.
Chicago-referens (17:e uppl.)Copple, Carol. Quality Matters: Improving the Professional Development of the Early Childhood Work Force. Washington, DC: National Institute for Early Childhood Professional Development, 1991.
MLA-referens (9:e uppl.)Copple, Carol. Quality Matters: Improving the Professional Development of the Early Childhood Work Force. National Institute for Early Childhood Professional Development, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.