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, vol. 1, no. 1, Jan. 2024, pp. 63-74, https://bmfopen.com/index.php/bmfopen/article/view/6.