A. Sophian, R. Purwaningsih, M. Muindar, E. P. J. Igirisa, and M. L. Amirullah, “Use of Direct PCR Technique Without DNA Extraction in Confirmation Test for Salmonella typhimurium Bacteria on Meatball Samples”, Borneo J Pharm, vol. 4, no. 4, pp. 324–332, Nov. 2021.