Rizkallah, Elias G., and Heather Miller. “National Versus Private-Label Brands: Dynamics, Conceptual Framework, And Empirical Perspective”. Journal of Business & Economics Research (JBER) 13, no. 2 (March 19, 2015): 123-136. Accessed September 5, 2020. https://clutejournals.com/index.php/JBER/article/view/9181.