Prasodjo, Pandu. “ONLINE LEARNING FOR STUDENTS 2014 OF STKIP AL HIKMAH SURABAYA: SCHOOLOGY.COM”. DIDAKTIKA : Jurnal Pemikiran Pendidikan, vol. 22, no. 2, Jan. 2018, pp. 164-75, https://journal.umg.ac.id/index.php/didaktika/article/view/223.