Sudarto, Sudarto. 2023. “STRATEGI MARKETING MIX DENGAN KONSEP 4P (PRICE, PRODUCT, PLACE, PROMOTION) DI PT.OXYPLAST INDONESIA”. SISTEM Jurnal Ilmu Ilmu Teknik 19 (1), 37 - 44. https://doi.org/10.37303/sistem.v19i1.246.