“Analysis of Canteen Vendors’ Perceptions and Challenges In The Implementation of The Free Nutritious Meal (MBG) Program at SMP Negeri 7 Medan”. PERSPEKTIF: Journal of Social and Library Science 4, no. 2 (August 31, 2026): 84–89. Accessed October 20, 2026. https://journal.aspublisher.co.id/index.php/perspektif/article/view/1242.