Guntoro, Lisnawita, and Loneli Costaner. 2023. “Exploring Research and Service Information System Usability by Heuristic Evaluation As a Compelement of System Usability Scale ”. Jurnal Penelitian Pendidikan IPA 9 (12):11045-52. https://doi.org/10.29303/jppipa.v9i12.5571.