Akwila, D., A. Aminougroho, and D. Wahyudi. “Bacterial Contamination Test on Plates, Spoons, and Glass at a Food Stall (angkringan) Surakarta City, Central Java”. BIOEDUPAT: Pattimura Journal of Biology and Learning, Vol. 2, no. 1, May 2022, pp. 19-22, doi:10.30598/bioedupat.v2.i1.pp19-22.