APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

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