Lacerda, L. D. de, and J. D. Hay. “Habitat of <i>Neoregelia cruenta</i≫ (Bromeliaceae) in Coastal Sand Dunes of Marica, Brazil”. Revista De Biología Tropical, vol. 30, no. 2, Nov. 1982, pp. 171–173, https://revistas.ucr.ac.cr/index.php/rbt/article/view/25243.