ALHARBI, Sanad Khulaif. The effect of Using Social Media during formal working hours upon productivity from employee’s opinionThe Study applied on EBU’s employees in STC. Journal of Economic, Administrative and Legal Sciences, New Mexico, United States, v. 4, n. 1, p. 157–140, 2020. DOI: 10.26389/AJSRP.S041219. Disponível em: https://www.ajsrp.ojsexpert.com/index.php/jeals/article/view/2124. Acesso em: 20 dec. 2025.