Agustin, E., 		Putro, M., & 		Purbayu, H.
2019 Sep  1.  Characteristic of Patients with Gastric Perforation due to Peptic Ulcer in Dr. Soetomo General Hospital Surabaya in the Period of January - December 2016. JBN (Jurnal Bedah Nasional). [Online] 3:2