Supiandi, Gojali. “Effect of Product Development and Product Quality on Customer Satisfaction in Superior Gelora Light in West Jakarta”. Kontigensi : Jurnal Ilmiah Manajemen 9, no. 1 (May 5, 2021): 116-124. Accessed April 18, 2024. https://jurnal.dim-unpas.web.id/index.php/JIMK/article/view/104.