Firdaus, Adrian, et al. “Kajian Produktivitas Instalasi Rangka Atap Baja Ringan: Studi Kasus Di Bandung, Indonesia”. Jurnal Ilmiah Rekayasa Sipil, vol. 17, no. 2, Oct. 2020, pp. 106-12, doi:10.30630/jirs.12.2.376.