Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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