APA (7e ed.) Bronvermelding

Copple, C. (1991). Quality matters: Improving the professional development of the early childhood work force. National Institute for Early Childhood Professional Development.

Chicago (17e ed.) Bronvermelding

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 (9e ed.) Bronvermelding

Copple, Carol. Quality Matters: Improving the Professional Development of the Early Childhood Work Force. National Institute for Early Childhood Professional Development, 1991.