Sandri, Siti Hanifa, and Wan Laura Hardilawati. “Customer Relationship Model, Inovation and E-Commerce to Improving SME Marketing Performance in Pekanbaru”. Jurnal Akuntansi dan Ekonomika 9, no. 2 (December 20, 2019): 213-222. Accessed January 27, 2021. https://ejurnal.umri.ac.id/index.php/jae/article/view/1496.