Alosaimi JO, Al-Hussein AA. Psychological happiness among workers and volunteers at the COVID-19 Vaccine Center in Taif Governorate. JEPS [Internet]. 2023 Mar. 28 [cited 2025 Dec. 20];7(10):101-18. Available from: https://www.ajsrp.ojsexpert.com/index.php/jeps/article/view/6216