Preoperational Thought (Pre-Operational Thought)
Here's your citation in American Psychological Association (APA) format:
Preoperational Thought (Pre-Operational Thought). (n.d.). In Alleydog.com's online glossary. Retrieved from: https://www.alleydog.com/glossary/definition-cit.php?term=Preoperational+Thought+%28Pre-Operational+Thought%29