Marsh, et.al. Ecology and Conservation of the Sirenia: Dugongs and Manatees. Cambridge University Press, 2011.
Ripple, Jeff. Manatees and Dugongs of the World. Voyageur Press, 1999.
Lourie, Peter. The Manatee Scientists: Saving Vulnerable Species. Houghton Mifflin Harcourt, 2011.
Alexander. Caitlind L. Manatees: Mermaids of the Sea: Educational Version. Learning Island, 2004.
Walker, Sally M. Manatees. Lerner Publications, 1999.
http://en.wikipedia.org/wiki/Manatee
http://seaworld.org/en/animal-info/animal-infobooks/manatee/
http://myfwc.com/manatee
http://www.savethemanatee.org/
http://www.smithsonianmag.com/science-nature/14-fun-facts-about-manatees-180950308/?no-ist