Herdiani, F.D. 2018. M-School Application Development As A Substitute Books Contact Between Parents And Teachers In Blossom Mobile Web-Based Preschool. Jurnal Teknik Informatika C.I.T Medicom. 10, 2 (Sep. 2018), 23–28. DOI:https://doi.org/10.35335/cit.Vol10.2018.4.pp23-28.