WIDYASTUTI, . M., and S. CHANGDA. “ANALISIS MARKETING CAPABILITY, CUSTOMER ENGAGEMENT, CUSTOMER PERCEPTION DAN PURCHASE INTENTION PRODUK BIHUN JAGUNG ‘PADAMU’SURABAYA”. Jurnal Keuangan Dan Bisnis, vol. 17, no. 2, Oct. 2019, pp. 62-71, http://103.165.236.247/index.php/jkb/article/view/30.