Informal labor: an analysis in Colombia. FACE: Revista de la Facultad de Ciencias Económicas y Empresariales, [S. l.], v. 4, n. 7, p. 9–34, 2009. DOI: 10.24054/face.v4i7.4187. Disponível em: https://ojs.unipamplona.edu.co/index.php/face/article/view/4187. Acesso em: 26 oct. 2025.