Ibrahim, F., P. Isyanto, dan N. Sumarni. “The Impact of Online Customer Reviews and Online Customer Ratings on Consumer Trust in Roughneck 1991 Products”. Jurnal Ilmiah Manajemen Kesatuan, vol. 12, no. 3, Mei 2024, hlm. 719-26, https://jurnal.ibik.ac.id/index.php/jimkes/article/view/2582.