Handayaningrum, Tria, and Wulan Budi Astuti. “Analysis of Marketing Strategy in Increasing Sales Volume: A Case Study of Sushi Geprek Bidadari”. ProBisnis : Jurnal Manajemen 13, no. 2 (October 30, 2022): 72–80. Accessed September 28, 2024. http://ejournal.joninstitute.org/index.php/ProBisnis/article/view/43.