Lucky, I.D. et al. 2026. The Influence Of Product Quality, Product Design, And Product Variation On Product Innovation In The Store Sm Binjai Bed Sheets. Journal of Management, Economic, and Accounting. 5, 2 (Apr. 2026), 1005–1014. DOI:https://doi.org/10.37676/jmea.v5i2.1505.