Kesumadina, Anita, et al. “DEVELOPMENT OF ONLINE BUSINESS MATERIALS FOR SCRATCH-BASED LEARNING IN VOCATIONAL SCHOOLS”. Jurnal Pendidikan Ekonomi, Perkantoran, Dan Akuntansi, vol. 5, no. 2, Aug. 2024, pp. 326-37, https://journal.unj.ac.id/unj/index.php/jpepa/article/view/45916.