Taylor, B. & Kirwan, G.M.: Corncrake (Crex crex). [w:] del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive [on-line]. 2019. [zarchiwizowane z tego adresu (2020-05-11)].
hbw.com
Taylor, B. & Kirwan, G.M.: Corncrake (Crex crex). [w:] del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive [on-line]. 2019. [zarchiwizowane z tego adresu (2020-05-11)].
itis.gov
Crex crex, [w:] Integrated Taxonomic Information System(ang.).
iucnredlist.org
apiv3.iucnredlist.org
Crex crex, [w:] The IUCN Red List of Threatened Species(ang.).
