Rofaida, Aryani, et al. “INVESTIGASI KOLOM DENGAN PENAMPANG BERLUBANG BERBASIS KAYU LOKAL: Investigation of Short Hollow Column of Local Timber”. Spektrum Sipil, vol. 2, no. 1, Aug. 2017, pp. 61-70, https://www.spektrum.unram.ac.id/index.php/Spektrum/article/view/52.