Citazione Stile APA (7a Edizione)

Sigel, I. E., & Cocking, R. R. (1977). Cognitive development from childhood to adolescence: A constructivist perspective. Holt, Rinehart and Winston.

Citazione stile Chigago Style (17a edizione)

Sigel, Irving E., e Rodney R. Cocking. Cognitive Development from Childhood to Adolescence: A Constructivist Perspective. New York: Holt, Rinehart and Winston, 1977.

Citatione MLA (8a ed.)

Sigel, Irving E., e Rodney R. Cocking. Cognitive Development from Childhood to Adolescence: A Constructivist Perspective. Holt, Rinehart and Winston, 1977.