APA (7th ed.) Citation

Siegler, R. S. (1978). Children's thinking: What develops? John Wiley.

Chicago Style (17th ed.) Citation

Siegler, Robert S. Children's Thinking: What Develops? Hillsdale, New Jersey: John Wiley, 1978.

MLA (9th ed.) Citation

Siegler, Robert S. Children's Thinking: What Develops? John Wiley, 1978.