Anggono, Felicia, and Trias Mahmudiono. “Relationship Between Knowledge Level of Traders, Selling Locations, and Hygiene Levels With Heavy Metal Lead (Pb) Content in Fritters in East Surabaya”. Media Gizi Kesmas 12, no. 1 (June 28, 2023): 148–153. Accessed August 5, 2024. https://e-journal.unair.ac.id/MGK/article/view/37676.