Purnomo, Susanto Yogo, Bung Karno University, Jakarta, Indonesia, Indonesia

• Kontigensi : Jurnal Ilmiah Manajemen Vol 11 No 1 (2023): Kontigensi: Jurnal Ilmiah Manajemen - Articles
  Analysis of Revenue, Marketing Costs, and Profit Before and During the Covid-19 Pandemic
  Abstract  PDF