Roya, Tip of the Iceberg of National Coffee Growing. Revista Torreón Universitario, [S. l.], v. 3, n. 3, p. 14–17, 2013. Disponível em: https://revistas.unan.edu.ni/index.php/Torreon/article/view/3491. Acesso em: 9 aug. 2025.