WELLER, M. The Open Flip – a digital economic model for education. Journal of Learning for Development , [S. l.], v. 3, n. 2, 2016. DOI: 10.56059/jl4d.v3i2.152. Disponível em: https://jl4d.org/index.php/ejl4d/article/view/152. Acesso em: 28 mar. 2024.