Silvesta, Y.P., Mustafa, I. and Sedu, V.A. 2025. The Role of Effective Communication Training to Improve Skills and Productivity by the Sikka Regency Manpower and Transmigration Service. Jurnal Indonesia Sosial Sains. 6, 1 (Jan. 2025), 53–57. DOI:https://doi.org/10.59141/jiss.v6i1.1558.