S-R Approach %28Contiguity%29
Here's your citation in American Psychological Association (APA) format:
S-R Approach %28Contiguity%29. (n.d.). In Alleydog.com's online glossary. Retrieved from: https://www.alleydog.com/glossary/definition-cit.php?term=S-R+Approach+%2528Contiguity%2529