Cita APA (7th ed.)

Siegler, R. S. (1986). Children's thinking. Prentice-Hall.

Cita Chicago (17th ed.)

Siegler, Robert S. Children's Thinking. Englewood Cliffs, N.J: Prentice-Hall, 1986.

Cita MLA (9th ed.)

Siegler, Robert S. Children's Thinking. Prentice-Hall, 1986.