Tobing, R. R., Sakti, A. K. and Hanny (2020) “Physical form sustainability of Huta Siallagan Samosir architecture in supporting Toba Caldera Geopark cultural tourism”, ARTEKS : Jurnal Teknik Arsitektur, 5(3), pp. 459-468. doi: 10.30822/arteks.v5i3.599.