Ramadhanni, A. and Alimudin, A. (2018) “ANALYSIS OF THE RELATIONSHIP BETWEEN PRICES, PROMOTIONS, VARIANTS OF PRODUCTS AND SALES VOLUME IN LEGO BRAND TOY PRODUCTS IN GRAND CITY SURABAYA”, Jurnal Ekonomi, 19(1), pp. 24 - 30. doi: 10.29138/je.v19i1.57.