URMO (2021). Phocarctos Peters, 1866. Accessed at: http://www.marinespecies.org/Urmo/aphia.php?p=taxdetails&id=231389 on 2025-05-19
Land J. van der (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). Phocarctos Peters, 1866. Accessed at: https://marinespecies.org/urmo/aphia.php?p=taxdetails&id=231389 on 2025-05-19
basis of recordShirihai, H. (2002). A complete guide to Antarctic Wildlife: the Birds and Marine Mammals of the Antarctic Continent and the Southern Ocean. Alula Press FI 510 pp.[details]
additional sourceBerta, A.; Churchill, M. (2012). Pinniped taxonomy: review of currently recognized species and subspecies, and evidence used for their description. <em>Mammal Review.</em> 42(3), 207-234.[details]