ROLLINSON, D. P.; REYNOLDS, C.; PAIJMANS, D. M. Vagrant Northern Rockhopper Penguin at Soetwater Beach, Western Cape. Biodiversity Observations, [S. l.], p. 36–38, 2013. Disponível em: https://journals.uct.ac.za/index.php/BO/article/view/189. Acesso em: 29 mar. 2024.