Ginting, M.H.S., R. Hasibuan, M. Lubis, B. Tanujaya, F. Suwito, F.A. Winoto, and R.C. Siregar. “Unsaturated Polyester Composite Filled Clam Shells (Anadara granosa): Effect of Tensile Strength, Elongation Break and Water Absorption”. Asian Journal of Chemistry 31, no. 7 (June 1, 2019): 1473–1475. Accessed May 17, 2024. https://asianpubs.org/index.php/ajchem/article/view/31_7_13.