ASENJO, C. F.; DÍAZ-RIVERA, A. C.; RECIO, E. Niacin in Puerto Rican Coffees. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 47, n. 3, p. 186–192, 1963. DOI: 10.46429/jaupr.v47i3.12951. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/12951. Acesso em: 17 aug. 2022.