- "Biology Reference." Taxonomy, History of. N.p., n.d. Web. 03 Mar. 2015.
- "Classification." - Definition from Biology-Online.org. N.p., n.d. Web. 03 Mar. 2015.
- "Domain." - Definition from Biology-Online.org. N.p., n.d. Web. 04 Mar. 2015.
- "Archaea." - Definition from Biology-Online.org. N.p., n.d. Web. 03 Mar. 2015.
- "Eubacteria." - Definition from Biology-Online.org. N.p., n.d. Web. 04 Mar. 2015.
- "Kingdom." - Definition from Biology-Online.org. N.p., n.d. Web. 04 Mar. 2015.
- "Animalia Kingdom: Definition, Characteristics & Facts." Study.com Academy. Study.com, n.d. Web. 04 Mar. 2015.
- "KINGDOM ANIMALIA: General Characteristics of Animals." School Work Helper. N.p., n.d. Web. 04 Mar. 2015.
- "Kingdom Plantae." The Free Dictionary. Farlex, n.d. Web. 04 Mar. 2015.
- "Kingdom Plantae." Kingdom Plantae. N.p., n.d. Web. 04 Mar. 2015.
- "Chordata." - Definition from Biology-Online.org. N.p., n.d. Web. 04 Mar. 2015.
- "Taxonomy Vocabulary." Flashcards. N.p., n.d. Web. 04 Mar. 2015.
- "Animal Phyla - Encyclopedia of Life." Encyclopedia of Life. N.p., n.d. Web. 04 Mar. 2015.
- "Phylum of the Kingdom Plantae." British Towns and Villages Network. N.p., n.d. Web. 04 Mar. 2015.
- "Phylum Chordata: The Vertebrates." Phylum Chordata: The Vertebrates. N.p., n.d. Web. 04 Mar. 2015.
- "Green Turtle (Chelonia Mydas)." :: NOAA Fisheries. N.p., n.d. Web. 02 Mar. 2015.
--> <http://www.nmfs.noaa.gov/pr/species/turtles/green.htm>.