Nayan, Nasir, Mohamad Suhaily Yusri Che Ngah, Mohmadisa Hashim, Yazid Saleh, and Mohammad Ameen Shafiee. 2018. “Pemetaan Tahap Ketersampaian Wi-Fi Di Universiti Pendidikan Sultan Idris, Perak: Mapping of Wi-Fi Coverage Levels in Sultan Idris Education University, Perak”. GEOGRAFI 2 (2):39-51. https://ejournal.upsi.edu.my/index.php/GEOG/article/view/476.