Hidayat, Yusuf, Taufik Hidayat, Arni Mariawati, Rosmiati Rosmiati, and Vina Naba’ul Haq. 2022. “WhatsApp Group: Online Media for Early Childhood Learning During the Covid-19 Pandemic”. Journal Corner of Education, Linguistics, and Literature 2 (2):140-48. https://doi.org/10.54012/jcell.v2i2.76.