Suhartono, R., and A. Efendi. “Design and Manufacturing of Bodypack Portable Milk Machine With Capacity 5 Liters”. SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin, vol. 14, no. 1, June 2020, pp. 52-59, doi:10.24853/sintek.14.1.52-59.