Lumbanraja, W., and D. Ariska. “Radiografi Tractus Urinaria Metode BNO-IVP Dengan Dugaan Awal Hidronefrosis”. Jurnal Medika Radiologi, Vol. 1, no. 1, Sept. 2020, pp. 1-6, https://www.jmr.jurnalsenior.com/index.php/jmr/article/view/2.