Devi Ristyana Puji Lestari, Nurul Istiq’faroh, Budi Purwoko. Inıtıal Needs Analysıs Development Of Image Letter Card Medıa Based Dıgıtal Barcode For Elementary School. JEE [Internet]. 2025 Mar. 30 [cited 2025 Apr. 30];8(1):3606-17. Available from: https://ejournal.unma.ac.id/index.php/jee/article/view/12686