ZAINAL, Z.; LUMBAN TOBING, S. S. W. .; AZIM, F. The effect of human resource development on the productivity of members of the Binjai City multi-business cooperative (KSU) source of Sustenance. Journal of Management Science (JMAS), [S. l.], v. 8, n. 1, p. 273–278, 2025. Disponível em: https://exsys.iocspublisher.org/index.php/JMAS/article/view/647. Acesso em: 26 jun. 2026.