SURATMI, S. Implementation Of Individual Guidance Through Whatsapp Group To Increase Achievement And Learning Motivation Of Students Of Class VII SMP Negeri 3 Ngaglik Sleman 2020/2021. IJCER (International Journal of Chemistry Education Research), [S. l.], v. 5, n. 2, p. 97–104, 2021. DOI: 10.20885/ijcer.vol5.iss2.art8. Disponível em: https://jurnal.uii.ac.id/IJCER/article/view/20253. Acesso em: 20 may. 2024.