F. . Lukman, R. . Nasrullah, C. Sobarna, T. C. Nugraha, M. Z. A. Malik, and E.-S. A. A. Rahim, “Indonesian as a Regional Lingua Franca in the Asean Economic Community”, jip, vol. 14, no. 1, pp. 551–572, Jan. 2026, doi: 10.26811/peuradeun.v14i1.2562.