Kusumawaty, Yeni, et al. “MARKETING STRATEGY FOR PROCESSED RUBBER MATERIALS IN THE APKARKUSI AUCTION SYSTEM IN GUNUNG VILLAGE GUNUNG TOAR SUB-DISTRICT KUANTAN SINGINGI DISTRICT”. Jurnal Ilmiah Sosio-Ekonomika Bisnis, vol. 26, no. 02, Dec. 2023, pp. 51-64, doi:10.22437/jiseb.v26i02.32882.