Đuro Arnold (Gjuro Arnold; 1853–1941), Croatian philosopher, pedagogue and writer By Theodor Mayerhofer - Đuro Šurmin: Povjest književnosti hrvatske i srpske, Zagreb 1898, p. 206https://books.google.com/books?id=8ClXAAAAMAAJ&pg=PA206, Public Domain, https://commons.wikimedia.org/w/index.php?curid=21185817
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Imagen subida por davidgn el Oct 14, 2021.
Derechos de autor: Public Domain