Monge, Julián. “"I, Astonished, Discovered by Chance the Only specimen”: The First Velvet Worm (Onychophora)”. Revista de Biología Tropical, no. 1 (September 17, 2019): Darwin. Accessed December 18, 2024. https://revistas.ucr.ac.cr/index.php/rbt/article/view/39056.