Cita APA (7th ed.)

DeVries, R., & Kohlberg, L. (1987). Constructivist early education: Overview and comparison with other programs. National Association for the Education of Young Children.

Cita Chicago (17th ed.)

DeVries, Rheta, i Lawrence Kohlberg. Constructivist Early Education: Overview and Comparison with Other Programs. Washington, D.C: National Association for the Education of Young Children, 1987.

Cita MLA (9th ed.)

DeVries, Rheta, i Lawrence Kohlberg. Constructivist Early Education: Overview and Comparison with Other Programs. National Association for the Education of Young Children, 1987.