Telaumbanua, A. P., Lahagu, P. and Waruwu, E. (2026) “Implementation of a Monitoring and Evaluation System to Improve the Efficiency of Goods Delivery at Ninja Express in Gunungsitoli City”, JURNAL ECONOMINA, 5(7), pp. 4161–4174. doi: 10.55681/economina.v5i7.3296.