Siregar LRM, Hutapea MEL, Malau R, Susrini S, Harahap A. The Role of Administrative Management Information Systems in Enhancing Operational Efficiency at PT. ABC. IJESSM [Internet]. 2025 May 11 [cited 2025 Sep. 4];5(2):707-16. Available from: https://lpppipublishing.com/index.php/ijessm/article/view/757