Freedman, Bill (2008). "Endangered species". Gale (4th ed.). 46 (44): 25. PMID 30399289
nps.gov
(Ingelesez)Attendant, An Automated; Directory, From Which One Can Opt to Access a Name; Park, Listen to Recorded Information About the; pm, or speak with a ranger Please note that if you are calling between 4:30; Am, 10; Us, park staff may not be available to answer your call Contact. «Climate Change Endangers Wildlife - Point Reyes National Seashore (U.S. National Park Service)»www.nps.gov(Noiz kontsultatua: 2024-03-12).
"Turtle farms threaten rare species, experts say Archived 2012-02-18 at the Wayback Machine". Fish Farmer, 30 March 2007. Their source is an article by James Parham, Shi Haitao and two other authors, published in February 2007 in the journal Conservation Biology.
