Nugraha, Arya Yudha, and Nuruni Ika Kusuma Wardani. 2023. “The Effect of Product Differentiation and Electronic Word of Mouth (E-Wom) on Consumer Purchasing Decisions of the Richeese Factory in Surabaya City”. Indonesian Journal of Business Analytics 3 (4):967-80. https://doi.org/10.55927/ijba.v3i4.5068.