NÜRNBERGER, Sven. Ursula McHardy (1930 – 2011). Der Palmengarten, [S. l.], v. 75, n. 2, p. 163, 2011. DOI: 10.21248/palmengarten.133. Disponível em: https://ojs.ub.uni-frankfurt.de/Palmengarten/index.php/Palmengarten/article/view/133. Acesso em: 13 mai. 2024.