Galgani Yolanda, Lodowik Nikodemus Kedoh, & Viktor Ariestyan Sedu. (2024). Optimization of The Role of Protocol and Communication of The Leadership of The Regional Secretary Office Sikka Regency in Public Information Services. IJESS International Journal of Education and Social Science, 5(2), 247–254. https://doi.org/10.56371/ijess.v5i2.330