Guntoro et al. 2023. Exploring Research and Service Information System Usability by Heuristic Evaluation as a Compelement of System Usability Scale . Jurnal Penelitian Pendidikan IPA. 9, 12 (Dec. 2023), 11045–11052. DOI:https://doi.org/10.29303/jppipa.v9i12.5571.