Awaludin, A., and P. Astuti. “Study on Utilization of LVL Sengon (Paraserianthes Falcataria) for Three-Hinged Gable Frame Structures”. International Journal of Engineering and Technology Innovation, vol. 6, no. 3, July 2016, pp. 232-41, https://ojs.imeti.org/index.php/IJETI/article/view/154.