محمد هلا. 2021. “Psychometric Properties of (DASS-21) Depression-Anxiety-Stress Scales »A Field Study on a Sample of the Syrian Community During the COVID-19 Outbreak«”. Latakia University Journal - Arts and Humanities Sciences Series 43 (3). https://journal.latakia-univ.edu.sy/index.php/humlitr/article/view/10687.