FOX, Anthony D.; KJELDSEN, Jørgen P.; DESHOLM, Mark; RASMUSSEN, Palle A.F.; BALSBY, Thorsten J.S.; HELDBJERG, Henning. Within and between year phenology of calling Spotted Crakes Porzana porzana in Denmark. Wildfowl, [S. l.], p. 102–115, 2014. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/153632. Acesso em: 16 dec. 2025.