PENDEKATAN METODOLOGI KAJIAN KES ISU DAN CABARAN KESATUAN SEKERJA: ANALISIS KAJIAN LEPAS: METHODOLOGICAL APPROACH TO THE CASE STUDY OF TRADE UNION ISSUES AND CHALLENGE: ANALYSIS OF PAST STUDIES. qjssh [Internet]. 2025 Jun. 30 [cited 2026 Sep. 6];6(3):365-73. Available from: https://www.qjssh.com/index.php/qjssh/article/view/534