MANDA, D.; MWABU, G. Why Do Workers Join Trade Unions?. UDSM Online Journal Testing, [S. l.], v. 9, n. 2, p. 119-140, 2019. DOI: 10.56279/ter.v9i2.49. Disponível em: https://testojs.udsm.ac.tz/index.php/ter/article/view/49. Acesso em: 9 jan. 2025.