References

References

 

Alderton, David. The encyclopedia of animals. Chartwell books, Inc., 2009. Pág. 343.

Payne, Prudente. Orang-utans. Behavior, ecology and conservation. WWF, 2008.

Arnold, Caroline. Orangutan. StarWalk Kids Media, 2013

http://en.wikipedia.org/wiki/Orangutan

http://wwf.panda.org/what_we_do/endangered_species/great_apes/orangutans/

http://animals.sandiegozoo.org/animals/orangutan

http://orangutan.org/

http://www.orangutan.com/

http://www.savetheorangutan.org/about-orangutans/index

http://www.elmundo.es/cronica/2014/11/02/5453e2f7268e3e87038b4579.html

http://www.orangutan.org.au/palm-oil