Wijaya, A. S., L. A. Manafe, and A. Chamid. “INSTAGRAM DIGITAL MARKETING IN THE PUBLIC SECTOR: A CASE STUDY AT THE VOCATIONAL AND PRODUCTIVITY TRAINING CENTER SIDOARJO”. Journal Informatic, Education and Management (JIEM), Vol. 8, no. 2, July 2026, pp. 826-33, doi:10.61992/jiem.v8i2.441.