Tambunan, Sondang, Chairuddin Lubis, and Helena Siregar. “Studies On Amoebicides At The Child Health Department Dr. Pirngadi Hospital, Medan (1969 - 1979)”. Paediatrica Indonesiana 24, no. 5-6 (August 8, 2018): 116-24. Accessed April 19, 2024. https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/1925.