Rujukan Serigala_barat_laut

  1. 1 2 3 4 5 6 7 Chambers SM, Fain SR, Fazio B, Amaral M (2012). "An account of the taxonomy of North American wolves from morphological and genetic analyses". North American Fauna. 77: 1–67. Dicapai 2 Julai 2013. Selenggaraan CS1: Menggunakan parameter authors (link)
  2. 1 2 Wozencraft, W. C. (2005). "Order Carnivora". dalam Wilson, D. E.; Reeder, D. M. Mammal Species of the World (edisi 3rd). Johns Hopkins University Press. ISBN 978-0-8018-8221-0. OCLC 62265494. 
  3. 1 2 Mech, L. David (1981), The Wolf: The Ecology and Behaviour of an Endangered Species, Akhbar Universiti Minnesota, ms. 352, ISBN 0-8166-1026-6
  4. 1 2 Richardson, J. (1829) Fauna boreali-americana, or, The zoology of the northern parts of British America, London : J. Murray [dll.], ms. 60-65
  5. ↑ Table listing the 1996 Northwestern wolves introduced into Idaho. Forwolves.org (1 November 2002). Dicapai pada 29 Disember 2012.
  6. ↑ Lopez, Barry H. (1978). Of Wolves and Men. J. M. Dent and Sons Limited. ms. 18. ISBN 0-7432-4936-4.
  7. ↑ "Yellowstone Elk". Perkhidmatan Taman Negara. 
  8. ↑ "Wolf -Bison Interactions in Yellowstone National Park". Universiti Nebraska. 
  9. ↑ McNay, M. E. (2007) "A Review of Evidence and Findings Related to the Death of Kenton Carnegie on 8 November 2005 Near Points North, Saskatchewan". Jabatan Ikan dan Buruan Alaska, Fairbanks, Alaska.
  10. ↑ Butler, L., B. Dale, K. Beckmen, dan S. Farley. 2011.Findings Related to the March 2010 Fatal Wolf Attack near Chignik Lake, Alaska. Wildlife Special Publication, ADF&G/DWC/WSP-2011-2. Palmer, Alaska.