Hafifillah, Moh. Gozi, and Unsul Abrar. “Brand Positioning in Chellep Mineral Water Produced by Bustanul Ulum Islamic Boarding School in Sumenep”. Proceeding ICAMEKA: International Conference Accounting, Management & Economics Uniska, vol. 1, no. 1, Nov. 2024, pp. 851-5, https://icamekaproceedings.fe.uniska-kediri.ac.id/index.php/icameka/article/view/70.