APA (7th ed.) Citation

Symposium on Cognition & Siegler, R. S. (1978). Children's thinking: What develops? L. Erlbaum Associates.

Chicago Style (17th ed.) Citation

Symposium on Cognition and Robert S. Siegler. Children's Thinking: What Develops? Hillsdale, N.J.: L. Erlbaum Associates, 1978.

MLA (9th ed.) Citation

Symposium on Cognition and Robert S. Siegler. Children's Thinking: What Develops? L. Erlbaum Associates, 1978.