Nurasyah, Rini Fadhillah Putri, Enny Fitriani, Johannes. An Integrated Educational Audio-Visual Media Based Information Service Model in The Era of Industrial Revolution 4.0 for MTs Lab IKIP Al Washliyah Medan Students. IJERE [Internet]. 2023 Dec. 18 [cited 2024 Jul. 3];2(2):553-6. Available from: https://ejournal.ipinternasional.com/index.php/ijere/article/view/654