Susanto, Nira Ramadhani, Fauzi Miftakh, and Abdul Kodir Al-Baekani. 2021. “Online Learning Through Google Classroom During COVID-19 Pandemic: Secondary Student’s Perception”. Jurnal Pendidikan Tambusai 5 (3):7300-7304. https://doi.org/10.31004/jptam.v5i3.2143.