Rafiq Yanhar, Muhammad, Muksin R Harahap, Ahmad Bachori, Suhardi Napid, Istu Sri Poneni, and Abdurrozzaq Hasibuan. 2018. “Fiber Laminate Adding Effect to Tensile Strength, Hardness, and Fault Surface of Teki Grass (Cyperus Rotundus) Composite”. International Journal of Engineering & Technology 7 (2.13): 394-97. https://doi.org/10.14419/ijet.v7i2.13.16928.