SCHUBERT, T. H.; ZAMBRANA, J. A. Araucaria heterophylla and Pinus caribaea: potential Christmas trees for Puerto Rico. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 66, n. 2, p. 145–149, 1982. DOI: 10.46429/jaupr.v66i2.7658. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/7658. Acesso em: 26 sep. 2022.