Purbasari, Ayi, Wanda Gusdya, Ferry Mulyanto, and Vina Fitria Nurlatifah. 2021. “Application of the Open Data Kit for Data Collection Presence of Primary School Teachers”. IAIC Transactions on Sustainable Digital Innovation (ITSDI) 2 (2):158-68. https://doi.org/10.34306/itsdi.v2i2.409.