Yesica Novrita Devi, Arninputranto, W. ., Hardiyanti, F. ., Hasin, M. K. ., & Indartono, A. . (2021). Integrated Validation System (IVS) Design for Proposal Submission of Student Activities at PPNS. Procedia of Social Sciences and Humanities, 1, 300–332. https://doi.org/10.21070/pssh.v1i.61