Hasanah, U., A. K. Umam, K. Muslimah, A. Rahmatika, and A. A. Marga. “The Impact of Online Learning on Early Childhood Social Behavior in Tk Pertiwi 2 Sidodadi Pekalongan Lampung Timur”. Journal of Childhood Development, vol. 1, no. 1, Mar. 2021, pp. 46-52, doi:10.25217/jcd.v1i1.1484.