American Ornithologists' Union. 1998.
Check-list of North American birds: 7th edition
The American Ornithologists' Union. Allen Press, Lawrence, Kansas. 829 pgs.
(ISBN: 1-891276-00-X)

Araya M., Braulio and Guillermo Millie H. 1998.
Guía de campo de las aves de Chile
Editorial Universitaria. Santiago de Chile. 406 pgs.
(ISBN 956-11-1236-1) (Spanish)

Baker, E. C. Stuart. 1935.
The nidification of birds of the Indian Empire: Volume IV Pondionidae - Podicepidae.
Taylor and Francis. London. 546 pgs.

Baldassarre, Guy A. and Eric G. Bolen. 1994.
Waterfowl Ecology and Management
John Wiley & Sons, Inc. New York, Chichester, Brisbane, Toronto, and Singapore. 609 pgs.
(ISBN: 0-471-59770-8)

Barbour, Thomas. 1923.
The birds of Cuba
Memoirs of the Nuttall Ornithological Club. No. VI. Cambridge, Massachusetts. Pgs 41-42.

Batt, Bruce D. J., et al. 1992.
Ecology and Management of Breeding Waterfowl
University of Minnesota Press. Minneapolis and London. 635 pgs.
(ISBN: 0-8166-2001-6)

Bellrose, Frank C. 1976.
Ducks, geese & swans of North America
Stackpole Books. Harrisburg, Pa. 543 pgs.
(ISBN: 0-8117-0535-8)

Clancey, P. A. 1964.
The Birds of Natal and Zululand
Oliver & Boyd. Edinburgh and London. 511 pgs.

Clements, James F. 2000.
Birds of the World: A Checklist: Fifth Edition.
Ibis Publishing Company. Vista, California. 867 pgs.
(ISBN: 0-934797-16-1)

Cramp, Stanley, et all. 1977.
Handbook of the birds of Europe, the Middle East, and North Africa: the birds of the Western Palearctic. Volume 1: Ostrich - Ducks
Oxford University Press. Oxford, London and New York. 722 pgs.
(ISBN: 0-19-857358-8)

Cuello, Juan. 1994.
Aves Uruguayas (Síntesis de las Familias) 1ª Parte: No Passeriformes.
Intendencia Municipal de Montevideo. Museo Damaso Antonio Larrañaga. Montevideo, Uruguay. 87 pgs. (Spanish)

Goodall, J. D., A. W. Johnson and Dr. R. A. Philippi B. 1951.
Las Aves de Chile: su conocimiento and sus costumbres: Tomo Segundo
Platt Establecimuentos Gráficos S. A. 445 pgs. (Spanish)

Gyldenstolpe, Nils. 1945.
A Contribution to the Ornithology of Northern Bolivia.
Almqvist & Wiksells Boktryckeri AB. Stockholm. 301 pgs and un excelente mapa.

Haverschmidt, F. 1968.
Birds of Surinam
Oliver & Boyd. Edinburgh and London. 445 pgs.

Howard, Richard and Alick Moore. 1991.
A complete checklist of the Birds of the World. Second Edition.
Academic Press. San Diego, California. 622 pgs.
(ISBN 0-12-356910-9)

Johnsgard, Paul A. 1965.
Handbook of Waterfowl Behavior
Comstock Publishing Associates. Cornell University Press. Ithaca, New York. 378 pgs.

Johnsgard, Paul A. 1978.
Ducks, Geese, and Swans of the World
University of Nebraska Press. Lincoln and London. 404 pgs.
(ISBN 8-8032-0953-3)

Livezey, Bradley C. 1986.
A Phylogenetic Analysis of Recent Anseriform Genera Using Morphological Characters
The Auk. Vol 103. Pgs 737-754.

Mackinnon,John and Karen Phillipps. 1997.
The Birds of Borneo, Sumatra, Java, and Bali
Oxford University Press. Oxford, Nueva York, Tokio. 491 pgs.
(ISBN: 0 19 854035 3 and 0 19 854034 5)

Madge, Steve and Hilary Burn. 1988.
Waterfowl: an identification guide to the ducks, geese, and swans of the world.
Houghton Mifflin Company. Boston, Massachusetts. 298 pgs.
(ISBN: 0-395-46727-6)

Olivares, Antonio, O.F.M. 1969.
Aves de Cundinamarca
Universidad Nacional de Colombia. Bogotá, Colombia. 425 pgs. (Spanish)

Palmer, Ralph S. 1976.
Handbook of North American Birds: Waterfowl
Yale University Press. New Haven and London. Vol 2.
(ISBN 0-300-01902-5)

Perrins, Christopher M, Dr. and Dr. Alex L. A. Middleton. 1989.
The encyclopedia of birds
Facts on File. New York, Oxford. 447 pgs más apendix.
(ISBN: 0-8160-1150-8)

Pizzey, Graham. 1980.
Birds of Australia
Princeton University Press. Princeton, New Jersey. 460 pgs.
(ISBN 0-691-08277-4 and 0-691-08483-1)

Pratt, H. Douglas, Phillip L. Bruner and Delwyn G. Berrett. 1987.
The birds of Hawaii and the Tropical Pacific
Princeton University Press. Princeton, New Jersey. 409 pgs más 45 láminas.
(ISBN: 0-691-08402-5 and 0-691-02399-9)

Salvadori, T. 1895.
Catalogue of the CHENOMORPHÆ (Palamedeæ, phoenicopteri, anseres), CRYPTURI, and RATITÆ in the collection of the British Museum
British Museum (Natural History). London. Vol 27. 636 pgs más 19 láminas.

Sibley, Charles G. and Burt L. Monroe, Jr. 1990.
Distribution and Taxonomy of Birds of the World.
Yale University Press. New Haven and London. 1111 pgs.
(ISBN 0-300-04969-2)

Sinclair, Ian, Phil Hockey and Warwick Tarboton. 1993.
Ilustrated Guide to the Birds of Southern Africa
Princeton University Press. Princeton, New Jersey. 426 pgs.
(ISBN: 0 691 04469 4)

Smythies, Bertram E. 1968.
The birds of Borneo
Oliver & Boyd. Edinburgh and London. 593 pgs.

Soothill, Eric and Peter Whitehead. 1978.
Wildfowl of the World
Blandford Press. Poole, Dorset. 297 pgs.
(ISBN: 0 7137 0863 8)

Wetmore, Alexander. 1926.
Observations on the birds of Argentina, Paraguay, Uruguay, and Chile
Smithsonian Institution. Bulletin 133. Washington. pgs 69-86.