Sinaga AMR, Marpaung MMS, Lubis MJK, Tambunan H, Simanjuntak RM. Eksplorasi Tepak Sirih Melayu Deli terhadap Konsep Geometri. jptam [Internet]. 2024 Aug. 24 [cited 2025 May 12];8(2):36111-5. Available from: http://jptam.org/index.php/jptam/article/view/19368