APA aipamena

Siegler, R. S. (1998). Children's thinking (3rd ed.). Prentice Hall.

Chicago Style aipamena

Siegler, Robert S. Children's Thinking. 3rd ed. Upper Saddle River, N.J: Prentice Hall, 1998.

MLA aipamena

Siegler, Robert S. Children's Thinking. 3rd ed. Prentice Hall, 1998.