Efficiency of cooperative business units through the application of engineering in the KAGUM cooperative, Malacca. Journal of Community Service and Application of Science, [S. l.], v. 4, n. 2, p. 120–124, 2026. DOI: 10.62769/exfy9z85. Disponível em: https://jcsas.kpn-kopx.id/index.php/jcsas/article/view/53.. Acesso em: 3 feb. 2026.