„FAU Traditions”. Florida Atlantic University: Athletics Department. Архивирано из оригинала 19. 5. 2011. г. Приступљено 25. 4. 2011.
fws.gov
Klute, David S.; Ayers, Loren W.; Green, Michael T.; Howe, William H.; Jones, Stephanie L.; Shaffer, Jill A.; Sheffield, Steven R.; Zimmerman, Tara S. (2003). „Status Assessment and Conservation Plan for the Western Burrowing Owl in the United States”(PDF). Washington, D.C.: U.S. Department of Interior, Fish and Wildlife Service. Biological Technical Publication FWS/BTP-R6001-2003. Архивирано из оригинала(PDF) 05. 07. 2017. г. Приступљено 17. 02. 2016.
Klute, David S.; Ayers, Loren W.; Green, Michael T.; Howe, William H.; Jones, Stephanie L.; Shaffer, Jill A.; Sheffield, Steven R.; Zimmerman, Tara S. (2003). „Status Assessment and Conservation Plan for the Western Burrowing Owl in the United States”(PDF). Washington, D.C.: U.S. Department of Interior, Fish and Wildlife Service. Biological Technical Publication FWS/BTP-R6001-2003. Архивирано из оригинала(PDF) 05. 07. 2017. г. Приступљено 17. 02. 2016.