Sumaryanto, Sumaryanto, Erni Widajanti, and Nani Irma Susanti , trans. “The Impact of Social Media Marketing Activities on Value Equity, Brand Equity, and Relationship Equity in Ngarsopura Market of Surakarta”. West Science Interdisciplinary Studies 2, no. 01 (January 25, 2024): 83–100. Accessed April 17, 2025. https://wsj.westsciences.com/index.php/wsis/article/view/537.