References

 

Enciclopedia del mundo animal. Parragon, 2013. Pp. 181, 182, 186.

Uhlenbroek, Charlotte. Vida animal. Pearson Alhambra, 2009. Pp. 128, 271, 365, 416, 439, 461, 485.

Simmonds, Mark. Whales and Dolphins of the World. New Holland Publishers, 2007.

Bird, Jonathan. Wildlife monographs. Dolphins. Evans Mitchell Books, 2007.

Animals, a visual encyclopedia. Smithsonian – DK publishing, 2008. Pp. 52, 60, 61.

World of animals Magazine. Imagine publishing. Pp. 71-74

http://www.nmfs.noaa.gov/stories/a/species/dolphins/index.html

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

http://www.savejapandolphins.org/

http://species-identification.org/index.php?groep=Dolphins+and+porpoises&selectie=46&hoofdgroepen_pad=%2C1%2C11%2C46

http://www.bluevoice.org/

http://seaworld.org/en/animal-info/animal-infobooks/bottlenose-dolphins/