“Pengaruh Harga Dan Kualitas Terhadap Keputusan Pembelian Tembakau PT.Djarum Di Kalangan Pengepul Di Madura”. Journal of Business & Banking, vol. 8, no. 2, Apr. 2019, pp. 307-18, https://doi.org/10.14414/jbb.v8i2.1647.