G. N. Simbolon, L. Agustin, L. K. Sianturi, and M. Wahyuni, “Local Government as Linkage Actors: Domestic Sources of Foreign Policy in the United States”, ijsps, vol. 3, no. 1, pp. 62–73, Apr. 2026, doi: 10.69812/ijsps.v3i1.242.