APA

Bredekamp S., National Association for the Education of Young Children, . (19911986). Developmentally appropriate practice in early childhood programs serving children from birth through age 8. Washington, DC: National Association for the Education of Young Children.

Chicago

Bredekamp Sue, National Association for the Education of Young Children, . 19911986. Developmentally appropriate practice in early childhood programs serving children from birth through age 8. Washington, DC: National Association for the Education of Young Children.

Harvard

Bredekamp S., National Association for the Education of Young Children, . (19911986). Developmentally appropriate practice in early childhood programs serving children from birth through age 8. Washington, DC: National Association for the Education of Young Children.

MLA

Bredekamp Sue, National Association for the Education of Young Children, . Developmentally appropriate practice in early childhood programs serving children from birth through age 8. Washington, DC: National Association for the Education of Young Children. 19911986.