Ernest Grace (2024) “DAMPAK DARI PROMOSI TERHADAP KEPUTUSAN PEMBELIAN MEREK M231 DI PT. RAMAYANA LESTARI SENTOSA, TBK PEMATANGSIANTAR”, Journal of Innovation Research and Knowledge, 4(1), pp. 179–186. doi: 10.53625/jirk.v4i1.7814.