ALHAKIMI, Wail; MUSLEH, Yousef Qasem Abdo; QAHTAN, Riyadh Abdullah. Internal Marketing and it’s impact in achieving competitive advantage" Applicable at Private Universities in Taiz". Humanities and Educational Sciences Journal, [S. l.], v. 7, n. 16, p. 399–429, 2021. DOI: 10.55074/hesj.v7i16.284. Disponível em: https://hesj.org/ojs/index.php/hesj/article/view/284. Acesso em: 21 sep. 2026.