Hakiki, A., M. Simadibrata, A. S. Putranto, and N. Rasyid. “Multimodality Treatment of Bile Duct Stone”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy, vol. 10, no. 1, Jan. 2009, pp. 18-22, doi:10.24871/101200918-22.