Oetomo, D. S., and R. F. Ramdhani. “Feasibility Analysis Of Construction Of A Wall Factory Precast Concrete In Samarinda, East Kalimantan At PT. RA Beton”. Journal of Information System, Technology and Engineering, vol. 2, no. 2, June 2024, pp. 196-1, doi:10.61487/jiste.v2i2.67.