http://repository.uhamka.ac.id/id/eprint/12626/ Hasil Peer Reviu Artikel "Critical review on mathematics virtual classroom practice in private university" Samsul Maarif, SMF http://repository.uhamka.ac.id/id/eprint/12626/1/Peer%20Reviu_Critical%20Reviu%20on%20Mathematic.pdf Unduh!