Br Sirait, Friska Pegrisentia, Hayatunnufus Hayatunnufus, and Sri Melvani Hardi. “Daycare Recommendation System Using Fuzzy Logic Method and Haversine Formula (Case Study : Medan City)”. Data Science: Journal of Computing and Applied Informatics 8, no. 1 (January 31, 2024): 1-13. Accessed May 12, 2024. https://talenta.usu.ac.id/JoCAI/article/view/14354.