Impact of Employees’ Performance on Achieving Competitive Advantage: A Field Study in the Mobile Phone-Run Companies in Sana’a. Journal of Social Studies, [S. l.], v. 26, n. 1, p. 81–108, 2020. DOI: 10.20428/jss.v26i1.1623. Disponível em: https://journals.ust.edu/index.php/JSS/article/view/1623. Acesso em: 4 apr. 2025.