Haikal, S. M. S., H. Irawiraman, and A. D. Putra. “Dual Primary Squamous Cell Carcinoma of the Lung and Adenocarcinoma Rectal”. Jurnal Respirasi, vol. 9, no. 1, Jan. 2023, pp. 44-48, doi:10.20473/jr.v9-I.1.2023.44-48.