Suparto, R. A., and N. Jamiat. “THE EFFECT OF SALES PROMOTION AND MOBILE MARKETING ON PURCHASE OF BAKSO MARGANA BRANCH MAP NUMBER 91 POST COVID-19”. Jurnal Ekonomi, vol. 12, no. 3, July 2023, pp. 385-90, https://ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/2202.