Wirawan, W. A., S. A. Setyabudi, T. D. Widodo, and M. A. Choiron. “Surface Modification With Silane Coupling Agent on Tensile Properties of Natural Fiber Composite”. Journal of Energy, Mechanical, Material, and Manufacturing Engineering, vol. 2, no. 2, Dec. 2017, pp. 97-104, doi:10.22219/jemmme.v2i2.5053.