Widianti, Sri. “MARKETING MIX LYSIS TOWARDS SALES OF DURIAN SOFT AT RIAU SPECIAL HOUSEHOLDS ‘YOLANDA’ PEKANBARU”. Jurnal Ekonomi 10, no. 02 (December 24, 2021): 67–75. Accessed May 12, 2026. https://ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/144.