Herdiani, Febri Dolis. 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):23-28. https://doi.org/10.35335/cit.Vol10.2018.4.pp23-28.