N. T and M. I. Birsyada, “Social Capital and the Use of Dual Currency at the Border (A Case Study of Economic Activities on Sebatik Island): Kapital Sosial dan Penggunaan Mata Uang Ganda di Perbatasan (Studi Kasus Kegiatan Ekonomi di Pulau Sebatik)”, JS, vol. 9, no. 4, pp. 1490–1502, Aug. 2025.