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