Simangunsong EB, Suhardi S. The Influence of Product Quality and Word of Mouth on Wardah Cosmetics Purchase Decisions in Batam City . eCo-Buss [Internet]. 2023 Aug. 10 [cited 2024 May 10];6(1):418-30. Available from: https://jurnal.kdi.or.id/index.php/eb/article/view/489