DE LA PIEDRA, Enrique. The urban informal sector: The inconsistency of the conventional paradigm and a new approach. Apuntes. Social Sciences Journal, [S. l.], n. 18, p. 31–54, 1986. DOI: 10.21678/apuntes.18.225. Disponível em: https://revistas.up.edu.pe/apuntes/article/view/225. Acesso em: 17 sep. 2026.