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