heermanni, [w:] The Key to Scientific Names, J.A.J.A.Jobling (red.), [w:] Birds of the World, S.M. Billerman et al. (red.), Cornell Lab of Ornithology, Ithaca [dostęp 2022-12-14](ang.).
itis.gov
Larus heermanni, [w:] Integrated Taxonomic Information System(ang.).
iucnredlist.org
apiv3.iucnredlist.org
Larus heermanni, [w:] The IUCN Red List of Threatened Species(ang.).
