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doi.org
dx.doi.org
RIVERS, James W.; KUEHN, Michael J. Predation of Eared Grebe by Great Blue Heron. The Wilson Journal of Ornithology. 2006-03, roč. 118, čís. 1, s. 112–113. Dostupné online [cit. 2023-05-18]. ISSN1559-4491. DOI10.1676/05-002.1. (anglicky)
iucnredlist.org
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The IUCN Red List of Threatened Species 2021.3. 9. prosince 2021. Dostupné online. [cit. 2021-12-27].
worldcat.org
RIVERS, James W.; KUEHN, Michael J. Predation of Eared Grebe by Great Blue Heron. The Wilson Journal of Ornithology. 2006-03, roč. 118, čís. 1, s. 112–113. Dostupné online [cit. 2023-05-18]. ISSN1559-4491. DOI10.1676/05-002.1. (anglicky)