Sihotang, C. J. M., S. A. Andrian, and T. P. Simanjuntak. “Cephalothoracoomphalopagus Conjoined Twins Fetus”. Journal Of The Indonesian Medical Association, Vol. 68, no. 4, Oct. 2019, pp. 180-5, doi:10.47830/jinma-vol.68.4-2018-83.