NGUYEN, N. H. Designing integrated teaching for trade skills based on performance competency – 4D method. Journal of Technical Education Science, [S. l.], v. 6, n. 3, p. 34–39, 2011. Disponível em: https://www.jte.edu.vn/index.php/jte/article/view/752. Acesso em: 7 apr. 2026.