CAMACHO, E.; SARMENTO COELHO, M. M. . Valuation Methodology of return on investment for tourism promotion plans in outermost regions – Madeira Case Study. e3 — Revista de Economia, Empresas e Empreendedores na CPLP, [S. l.], v. 5, n. 2, p. 71–98, 2020. DOI: 10.29073/e3.v5i2.251. Disponível em: https://revistas.ponteditora.org/index.php/e3/article/view/251. Acesso em: 16 sep. 2025.