Angga Pramana, Farida Hamzah, Priscila Gultom, Okri Reval, Suci Rahmayani, and Syawatul Mutiara. “Producing Orange Marmalade in Pulau Belimbing 1 Kuok Village, Kuok Sub-Dstrick in Kampar Regency Riau”. Journal of Community Engagement Research for Sustainability 1, no. 1 (July 26, 2021): 49–59. Accessed November 4, 2026. https://cers.ejournal.unri.ac.id/index.php/cers/article/view/3.