Fadhila Dhuha Oktiana, Budi Santoso and Rahmi Sulistyarini 2026. The Meaning and Limitations of the Phrases “Valid” and “Appropriate” in Electronic Summons from the Perspec-tive of the Principle of Legal Certainty. Journal of Science and Education (JSE). 6, 2 (Jan. 2026), 1374-1380. DOI:https://doi.org/10.58905/jse.v6i2.734.