HAUGEN, Matthew T.; POWELL, Larkin A.; VRTISKA, Mark V. Assessment of spatial changes in the duck harvest within the Central Flyway, 1997–2011. Wildfowl, [S. l.], p. 75–90, 2014. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/153628. Acesso em: 13 feb. 2026.