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