Chú thích Cáo bạc

  1. ↑ The Canadian Encyclopecia
  2. ↑ Audubon, John James (1967). The Imperial Collection of Audubon Animals. tr. 307. ASIN B000M2FOFM.
  3. ↑ Macdonald, David (1987). Running with the Fox. Unwin Hyman. tr. 224. ISBN 0-04-440199-X.
  4. ↑ Laut, Agnes C. The Fur Trade of America, Kessinger Publishing, 2004. ISBN 0-7661-9616-X
  5. ↑ Bản mẫu:±. The Imperial Collection of Audubon Animals. — 1967. — С. p307.
  6. ↑ Mammals of the Soviet Union Vol.II Part 1a, Sirenia and Carnivora (Sea cows; Wolves and Bears), V.G Heptner and N.P Naumov editors, Science Publishers, Inc. USA. 1998. ISBN 1-886106-81-9
  7. ↑ The quadrupeds of North America, Volume 3 by John James Audubon and John Bachman, by illustrated by John Woodhouse Audubon, published by V.G. Audubon, 1854
  8. ↑ Red Fox, New York’s Wildlife Resources, Number 11, 1982
  9. ↑ Island Information: Armorial Bearings