SUSANNA, A. Günther W. H. Kunkel (1928–2007). Collectanea Botanica, [S. l.], v. 28, p. 149–150, 2009. DOI: 10.3989/collectbot.2008.v28.013. Disponível em: https://collectaneabotanica.revistas.csic.es/index.php/collectaneabotanica/article/view/40. Acesso em: 3 may. 2024.