Tham khảo Gấu nâu Kamchatka

  1. 1 2 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
  2. 1 2 McLellan, B.N. and D. Reiner. 1994. A review of bear evolution. Int. Conf. Bear Res. and Manage. 9: pp. 85–96. (PDF) . Truy cập 2011-09-26.
  3. ↑ Prospects for polar tourism by John Snyder and Bernard Stonehouse, published by CABI, 2007, ISBN 1-84593-247-1
  4. ↑ On The Status Of Some Arctic Mammals Robert Rausch. (PDF) . Truy cập 2011-09-26.