Stephen DeStefano, Coyote at the Kitchen Door: Living With Wildlife in Suburbia, Harvard University Press, 2010, p. 76.
books.google.com
Stanley D. Gehrt, Seth P. D. Riley, and Brian L. Cypher, Urban Carnivores: Ecology, Conflict, and Conservation, JHU Press, 2010, ISBN0801893895, p. 231.Archived 2013-10-11 at the Wayback Machine
Frederick R. Adler and Colby J. Tanner, Urban Ecosystems: Ecological Principles for the Built Environment, Cambridge University Press, 2013, ISBN0521769841, p. 210.Archived 2017-02-22 at the Wayback Machine
Tammy Lau and Linda Sitterding, Yosemite National Park in Vintage Postcards, Arcadia Publishing, 2000, p. 125.Archived 2013-11-02 at the Wayback Machine
Robert B. Keiter, To Conserve Unimpaired: The Evolution of the National Park Idea, Island Press, 2013, p. 176.Archived 2013-11-27 at the Wayback Machine
Robert W. Sandford, Ecology and Wonder in the Canadian Rocky Mountain Parks World Heritage Site, Athabasca University Press, 2009, pp. 284–288.Archived 2013-11-02 at the Wayback Machine
Terry Inigo-Jones, The Canadian Rockies Colourguide, James Lorimer, 2010, p. 54.Archived 2013-10-11 at the Wayback Machine
Kevin Van Tighem, Wild Animals of Western Canada, Rocky Mountain Books, 2009, p. 32.Archived 2013-10-28 at the Wayback Machine
Jon P. Beckmann, Anthony P. Clevenger, Marcel Huijser, and Jodi A. Hilty, Safe Passages: Highways, Wildlife, and Habitat Connectivity, Island Press, 2010, p. 68.Archived 2013-10-11 at the Wayback Machine
Tom Warhol and Marcus Schneck, Birdwatcher's Daily Companion: 365 Days of Advice, Insight, and Information for Enthusiastic Birders, Quarry Books, 2010, p. 7.Archived 2013-10-11 at the Wayback Machine
Paul A. Rees, An Introduction to Zoo Biology and Management, Wiley, 2011, p. 306.Archived 2020-06-13 at the Wayback Machine
Devra G. Kleiman, Katerina V. Thompson, and Charlotte Kirk Baer, Wild Mammals in Captivity: Principles and Techniques for Zoo Management, 2nd ed., University of Chicago Press, 2010, ISBN0226440117, p. 140.Archived 2020-06-11 at the Wayback Machine
Dwyer, June (2013). "Do Not Feed the Animals: Do Not Touch: Desire for Wild Animal Companionship in the Twenty-first Century". Interdisciplinary Studies in Literature and Environment. 19 (4): 623–644. doi:10.1093/isle/iss118.
Benson, Etienne (December 2013). "The Urbanization of the Eastern Gray Squirrel in the United States". Journal of American History. 100 (3): 691–710. doi:10.1093/jahist/jat353.
Hawaii Department of Land and Natural Resources, Hawaii Department of Agriculture. "Prohibition of Shark Feeding". Archived from the original on 2014-08-20. Retrieved 2013-07-10.
Stanley D. Gehrt, Seth P. D. Riley, and Brian L. Cypher, Urban Carnivores: Ecology, Conflict, and Conservation, JHU Press, 2010, ISBN0801893895, p. 231.Archived 2013-10-11 at the Wayback Machine
Frederick R. Adler and Colby J. Tanner, Urban Ecosystems: Ecological Principles for the Built Environment, Cambridge University Press, 2013, ISBN0521769841, p. 210.Archived 2017-02-22 at the Wayback Machine
Tammy Lau and Linda Sitterding, Yosemite National Park in Vintage Postcards, Arcadia Publishing, 2000, p. 125.Archived 2013-11-02 at the Wayback Machine
Robert B. Keiter, To Conserve Unimpaired: The Evolution of the National Park Idea, Island Press, 2013, p. 176.Archived 2013-11-27 at the Wayback Machine
Robert W. Sandford, Ecology and Wonder in the Canadian Rocky Mountain Parks World Heritage Site, Athabasca University Press, 2009, pp. 284–288.Archived 2013-11-02 at the Wayback Machine
Terry Inigo-Jones, The Canadian Rockies Colourguide, James Lorimer, 2010, p. 54.Archived 2013-10-11 at the Wayback Machine
Kevin Van Tighem, Wild Animals of Western Canada, Rocky Mountain Books, 2009, p. 32.Archived 2013-10-28 at the Wayback Machine
Jon P. Beckmann, Anthony P. Clevenger, Marcel Huijser, and Jodi A. Hilty, Safe Passages: Highways, Wildlife, and Habitat Connectivity, Island Press, 2010, p. 68.Archived 2013-10-11 at the Wayback Machine
Hawaii Department of Land and Natural Resources, Hawaii Department of Agriculture. "Prohibition of Shark Feeding". Archived from the original on 2014-08-20. Retrieved 2013-07-10.
Tom Warhol and Marcus Schneck, Birdwatcher's Daily Companion: 365 Days of Advice, Insight, and Information for Enthusiastic Birders, Quarry Books, 2010, p. 7.Archived 2013-10-11 at the Wayback Machine
Paul A. Rees, An Introduction to Zoo Biology and Management, Wiley, 2011, p. 306.Archived 2020-06-13 at the Wayback Machine
Devra G. Kleiman, Katerina V. Thompson, and Charlotte Kirk Baer, Wild Mammals in Captivity: Principles and Techniques for Zoo Management, 2nd ed., University of Chicago Press, 2010, ISBN0226440117, p. 140.Archived 2020-06-11 at the Wayback Machine