Mutiarani, Puspita Tri. “Study of Cargo Vessel Sanitation and the Presence E.Coli Bacteria on Food in the Port Area of Tanjung Perak Surabaya”. JURNAL KESEHATAN LINGKUNGAN 9, no. 2 (July 27, 2018): 11–121. Accessed November 26, 2024. https://e-journal.unair.ac.id/JKL/article/view/9181.