Anggia, Feliks, Ubud Salim, Sunaryo Sunaryo, and Solimun Solimun. “Moderation of Personal Relations on Sustainable Competitive Advantages, Customer Relationship Management, and Marketing Performance: Study on Small Scale Business of Leather Products Marketers in East Java”. International Review of Management and Marketing 7, no. 4 (October 31, 2017): 74–82. Accessed December 26, 2024. https://mail.econjournals.com/index.php/irmm/article/view/5135.