Industrial and Organizational Psychology (I/O Psychology)
Here's your citation in American Psychological Association (APA) format:
Industrial and Organizational Psychology (I/O Psychology). (n.d.). In Alleydog.com's online glossary. Retrieved from: https://www.alleydog.com/glossary/definition-cit.php?term=Industrial+and+Organizational+Psychology+%28I%2FO+Psychology%29