S. D. Ardanari and R. Mukiwihando, “DAYA SAING EKSPOR KARET ALAM TIGA NEGARA ITRC (INDONESIA, THAILAND, MALAYSIA) DI PASAR INTERNASIONAL PERIODE 1994-2018”, JMKP, vol. 4, no. 1, pp. 81–87, Jun. 2020.