Beehler, Bruce M., Thane K. Pratt, and Dale A. Zimmerman. 1986.
Birds of New Guinea
Princeton University Press. Princeton, New Jersey. 293 pgs.
(ISBN 0-691-02394-8)

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

Falla, R. A., R. B. Sibson and E. G. Turbott. 1966.
A field guide to the birds of New Zealand and outlying islands
Houghton Mifflin Company. Boston. 256 pgs.

Heather, Barrie and Hugh Robertson. 1997.
The field guide to the birds of New Zealand
Oxford University Press. Oxford, New York, Tokyo. 432 pgs.
(ISBN: 0 19 850146 3 and 0 19 850145 5)

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)

Madge, Steve, and Hilary Burn. 1988.
Waterfowl: an identification guide to the ducks, geese, and swans of the world.
Houghton Mifflin Company. Boston, Massachusetts. pgs 26-27, 125-126.
(ISBN 0-395-46727-6 and 0-395-46726-8)

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

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