Tavakoli, Niloofar, and Farzad Karimi. “A Review of Marketing Mix Models in the Digital Economy: Measuring the Effectiveness of 4Ps in E-Commerce”. Business, Marketing, and Finance Open 1, no. 1 (January 1, 2024): 63–74. Accessed December 25, 2024. https://bmfopen.com/index.php/bmfopen/article/view/6.