Nuraini, Cut, Hibnul Walid, Meyga Fitri Handayani Nasution, Indra Kesuma Hadi, and Suprayitno . “Environmentally Friendly Materials Use Strategy on Heirloom Houses of Mandailing Community in Mountainous Area (Case Studies : Heirloom Houses in Singengu and Habincaran)”. International Journal of Engineering & Technology 7, no. 3.4 (June 25, 2018): 494–497. Accessed May 2, 2024. https://sciencepubco.com/index.php/ijet/article/view/20276.