Enru, Mikhael Billy, et al. “Pengaruh Harga Terhadap Keputusan Pembelian Di Bengkel Planet Motor Tumpaan”. Productivity, vol. 2, no. 7, Nov. 2021, pp. 561-5, https://ejournal.unsrat.ac.id/v3/index.php/productivity/article/view/37107.