ZARINA WAHEED , ABDUL NASIR KIAZAI, WAHEED BAHADUR. ETHICS AND VALIDITY AS CORE ISSUES IN QUALITATIVE RESEARCH: A REVIEW PAPER. Pakistan Journal of Educational Research , [S. l.], v. 3, n. 2, 2020. DOI: 10.52337/pjer.v3i2.42. Disponível em: https://pjer.org/index.php/pjer/article/view/42. Acesso em: 5 aug. 2026.