R. B. . Utomo, K. A. . Puspitasari, N. binti S. . Hudin, and M. . Budiantara, “IMPROVING PRODUCTION COST MANAGEMENT IN BATIK MAKING IN KUALA LUMPUR, MALAYSIA”, COMMUSER EMPO ENGA, vol. 4, no. 2, pp. 269–274, Aug. 2024.