Banks, R.C. Taxonomy of Greater White-fronted Geese (Aves: Anatidae). Proceedings of the Biological Society of Washington. 2011, 124 (3): 226–233. S2CID 85077293. doi:10.2988/11-14.1.
Horacek, Micha. Backtracking the movements of a migratory bird: a case study of a white-fronted goose (Anser albifrons). Rapid Communications in Mass Spectrometry. 2011, 25 (20): 3146–3150. Bibcode:2011RCMS...25.3146H. PMID 21953970. doi:10.1002/rcm.5209.
Horacek, Micha. Backtracking the movements of a migratory bird: a case study of a white-fronted goose (Anser albifrons). Rapid Communications in Mass Spectrometry. 2011, 25 (20): 3146–3150. Bibcode:2011RCMS...25.3146H. PMID 21953970. doi:10.1002/rcm.5209.
Horacek, Micha. Backtracking the movements of a migratory bird: a case study of a white-fronted goose (Anser albifrons). Rapid Communications in Mass Spectrometry. 2011, 25 (20): 3146–3150. Bibcode:2011RCMS...25.3146H. PMID 21953970. doi:10.1002/rcm.5209.
peatlandsni.gov.uk
Peatlands. Peatlandsni.gov.uk. 12 January 2011 [27 February 2013]. (原始内容存档于30 October 2010).
semanticscholar.org
api.semanticscholar.org
Banks, R.C. Taxonomy of Greater White-fronted Geese (Aves: Anatidae). Proceedings of the Biological Society of Washington. 2011, 124 (3): 226–233. S2CID 85077293. doi:10.2988/11-14.1.