Simanihuruk, R.M. 2023. Geographical Information System for the Layout of the Simalungun Protestant Christian Church (GKPS) in Medan City. Jurnal Mekintek : Jurnal Mekanikal, Energi, Industri, Dan Teknologi. 14, 1 (Apr. 2023), 1–7. DOI:https://doi.org/10.35335/mekintek.v14i1.203.