Wedy Nasrul, Zulmardi, and T. I. . Indrayani. “Synergy and Optimization of Local Institutional to Repair Gambir (Uncaria Gambir Roxb) Market in Indonesia”. International Journal of Social Sciences and Humanities Invention, vol. 7, no. 01, Jan. 2020, pp. 5790-5, doi:10.18535/ijsshi/v7i01.02.