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- American Boarding Kennels Association. http://www.abka.com
- Eldredge, Debra M. et al. "Dog Owner's Home Veterinary Handbook." 2007.
- The Humane Society of the United States. http://www.hsus.org/
- Overall, Karen L. "Treating Anxiety is Different than Managing Problem." DVM Newsmagazine. Jan. 1, 2003. (Jan. 8, 2008) http://veterinarynews.dvm360.com/dvm/article/articleDetail.jsp?id=43492