URMO (2025). Pelecaniformes. Accessed at: https://www.marinespecies.org/urmo/aphia.php?p=taxdetails&id=2684 on 2025-09-10
Land J. van der (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). Pelecaniformes. Accessed at: https://www.marinespecies.org/urmo/aphia.php/aphia.php?p=taxdetails&id=2684 on 2025-09-10
basis of recordHarrison, P. (1985). Seabirds: an identification guide. Revised edition. Christopher Helm Publisher. A & C Black: London, UK. ISBN 0-7136-3510-X. 448 pp. (look up in IMIS) [details]