Sary, S., T. Aprila, and S. Suryanto. “The Effect of Price, Sales Promotion and Personal Selling on the Daihatsu Sirion Purchase Decision at PT Capella Medan: The Effect of Price, Sales Promotion and Personal Selling on the Daihatsu Sirion Purchase Decision at PT Capella Medan”. Jurnal Mantik, vol. 4, no. 2, Aug. 2020, pp. 1212-6, doi:10.35335/mantik.Vol4.2020.925.pp1212-1216.