Sinaga HT, Sitanggang B, Manalu M. Using a School Meal Report Book to Improve Preschool Children’s Packed Meals in Tanjung Morawa. sowel [Internet]. 2024 Jun. 27 [cited 2026 Nov. 9];1(2):116-27. Available from: https://ejournal.bacadulu.net/index.php/sowel/article/view/311