Fortunata, Fransisca, Nurmaidah Ginting, Selviany Luhur, Edy Gunawan, and Meilisa Sinaga. “INFLUENCE OF PERSONAL SELLING, SALES PROMOTION AND CUSTOMER SATISFACTION ON CUSTOMER LOYALTY At PT AMMAY CEMERLANG NUSANTARA, MEDAN”. Jurnal Ekonomi 12, no. 02 (April 21, 2023): 1076–1079. Accessed December 5, 2024. https://ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/1832.