Essam, Reem, Wael Kortam, and Alaa Tarek. 2018. “An Abstraction Theory: A Bravery Perspective on Examining Effectiveness of Arts and Heritage Marketing Dimensions and Customer Value in Art Museums, Exhibits and Galleries in Egypt”. Journal of Marketing Development and Competitiveness 12 (4). https://doi.org/10.33423/jmdc.v12i4.197.