Anggraini, T. ., and S. . Yani Kusumastuti. “EFFECT OF VALUE ADDED TAX (VAT), INCOME, PRICE AND PAYMENT METHODS AGAINST CONSUMER DEMAND ON SMARTPHONES”. PENANOMICS: International Journal of Economics, vol. 1, no. 2, Aug. 2022, pp. 243-56, doi:10.56107/penanomics.v1i2.33.