Ganso de testa branca: Diferenzas entre revisións
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Liña 65:
* Carboneras, Carles (1992): Family Anatidae (Ducks, Geese and Swans). En: del Hoyo, Josep; Elliott, Andrew & Sargatal, Jordi (eds.): ''Handbook of Birds of the World'' (Volume 1: Ostrich to Ducks): 536-629, plates 40-50. Lynx Edicions, Barcelona. ISBN 84-87334-10-5.
* Fox, A.D. & Stroud, D.A. (2002): Greenland White-fronted Goose. ''Birds of the Western Palearctic Update'' '''4'''(2): 65-88.
* Littlejohn, Chase (1916): Some unusual records for San Mateo County, California. Abstract en: Cooper Ornithological Society|Cooper Club: Minutes of Cooper Club Meetings. ''Condor (journal)'' '''18'''(1): 38-40. [
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