SIHOMBING, Dionisius; SIRAIT, Albert Pauli; SIRAIT, Boimin. Development of Digital Teaching Materials Using Problem Based Learning Models on Business Introduction Subject. Journal Of Education And Teaching Learning (JETL), [S. l.], v. 6, n. 1, p. 13–24, 2024. DOI: 10.51178/jetl.v6i1.1614. Disponível em: https://pusdikra-publishing.com/index.php/jetl/article/view/1614. Acesso em: 8 aug. 2025.