Ratna E, Ratna I. Decision Making System Internet Addiction in Children Aged 7-17 Year Use Forward Chaining Method (Case Study : Terik Village – Krian, Sidoarjo). PELS [Internet]. 2021Jul.16 [cited 2024Nov.21];1(2). Available from: https://pels.umsida.ac.id/index.php/PELS/article/view/1004