Mgiba, Freddy Marilahimbilu. “Social Network Theory, Sigma Six, and Customer Experience Management: Common Elements That Aid Positive Sales-Marketing Interface: A Review of the Literature”. International Review of Management and Marketing 9, no. 5 (September 21, 2019): 165–172. Accessed April 30, 2024. https://www.econjournals.com/index.php/irmm/article/view/8674.