Rouf, M Abdur, Baikaly Ferdous, Abdul Alim Sheikh, M Ziaur Rahman, Salma Chowdhury, Tanvirul Hasan, and ABM Moniruddin. “Umbolith: A Rare Case of Umbilical Lithiasis in Adult”. KYAMC Journal 12, no. 2 (September 6, 2021): 111–113. Accessed September 9, 2025. https://www.banglajol.info/index.php/KYAMCJ/article/view/55446.