ROMERO, M. F.; GONZÁLEZ, A. M.; SALAS, R. M. Review of Cephalanthus (Rubiaceae), with the segregation of the new African genus Sylvainia. Bonplandia, [S. l.], v. 32, 2023. Disponível em: https://revistas.unne.edu.ar/index.php/bon/article/view/7292. Acesso em: 4 ene. 2025.