Moses A, O EK, Osunsan O. Product Innovation, Price Level And Competitive Advantage: A Perception Assessment Of Beer Products. J. Manaj. dan Kewirausahaan [Internet]. 2018 Jun. 29 [cited 2026 Jun. 14];6(1):26-34. Available from: https://jurnal.unmer.ac.id/index.php/jmdk/article/view/2189