Cook, James; Furneaux, Tobias (1777). A Voyage Towards the South Pole, and Round the World : Performed in His Majesty's ships the Resolution and Adventure, in the Years 1772, 1773, 1774, and 1775. Vol. 1 (2nd ed.). London: W. Strahan and T. Cadell. pp. 72, 97.
Veltman, C. J.; Collier, K. J.; Henderson, I. M.; Newton, L. (1995). "Foraging ecology of blue ducks Hymenolaimus malacorhynchos on a New Zealand river: implications for conservation". Biological Conservation. 74 (3): 187–194. Bibcode:1995BCons..74..187V. doi:10.1016/0006-3207(95)00029-4.
harvard.edu
ui.adsabs.harvard.edu
Veltman, C. J.; Collier, K. J.; Henderson, I. M.; Newton, L. (1995). "Foraging ecology of blue ducks Hymenolaimus malacorhynchos on a New Zealand river: implications for conservation". Biological Conservation. 74 (3): 187–194. Bibcode:1995BCons..74..187V. doi:10.1016/0006-3207(95)00029-4.
hbw.com
Carboneras, K.; Kirwan, G.M. (2017). del Hoyo, Josep; Elliott, Andrew; Sargatal, Jordi; Christie, David A.; de Juana, Eduardo (eds.). "Blue Duck (Hymenolaimus malacorhynchos)". Handbook of the Birds of the World Alive. Barcelona, Spain: Lynx Edicions. Archived from the original on 4 April 2023. Retrieved 5 December 2017.
"Blue Duck". Archived from the original on 30 May 2022. Retrieved 26 September 2020.
Marchant, S.; Higgins, P.G., eds. (1990). "Hymenolaimus malacorhynchos Blue Duck"(PDF). Handbook of Australian, New Zealand & Antarctic Birds. Volume 1: Ratites to ducks; Part B, Australian pelican to ducks. Melbourne, Victoria: Oxford University Press. pp. 1255–1260. ISBN978-0-19-553068-1. Archived(PDF) from the original on 9 August 2022. Retrieved 1 July 2022.
nzgeo.com
Hansford, Dave (July–August 2018). "The first test". New Zealand Geographic. 152: 74–91. Archived from the original on 6 August 2018. Retrieved 5 August 2018.
"Blue Duck". Archived from the original on 30 May 2022. Retrieved 26 September 2020.
Marchant, S.; Higgins, P.G., eds. (1990). "Hymenolaimus malacorhynchos Blue Duck"(PDF). Handbook of Australian, New Zealand & Antarctic Birds. Volume 1: Ratites to ducks; Part B, Australian pelican to ducks. Melbourne, Victoria: Oxford University Press. pp. 1255–1260. ISBN978-0-19-553068-1. Archived(PDF) from the original on 9 August 2022. Retrieved 1 July 2022.
Carboneras, K.; Kirwan, G.M. (2017). del Hoyo, Josep; Elliott, Andrew; Sargatal, Jordi; Christie, David A.; de Juana, Eduardo (eds.). "Blue Duck (Hymenolaimus malacorhynchos)". Handbook of the Birds of the World Alive. Barcelona, Spain: Lynx Edicions. Archived from the original on 4 April 2023. Retrieved 5 December 2017.
"Blue duck/whio". New Zealand Department of Conservation – Te Papa Atawhai. Archived from the original on 2 March 2015. Retrieved 13 March 2015.
Hansford, Dave (July–August 2018). "The first test". New Zealand Geographic. 152: 74–91. Archived from the original on 6 August 2018. Retrieved 5 August 2018.