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