Sinaga, Haripin Togap, Berlin Sitanggang, and Mincu Manalu. “Using a School Meal Report Book to Improve Preschool Children’s Packed Meals in Tanjung Morawa”. Journal of Social Welfare and Community Development 1, no. 2 (June 27, 2024): 116–127. Accessed November 9, 2026. https://ejournal.bacadulu.net/index.php/sowel/article/view/311.