Sources

Ava­tar is the pro­per­ty of Dis­ney and Light­s­torm Entertainment. 

The core of “Pan­do­ra: The Na’vi” is a trans­la­ti­on of the gre­at work of Karyu Ney­ti­ri, who wro­te “The Na’vi” — a coll­ec­tion of all offi­ci­al­ly known info about the Na’vi. The ori­gi­nal Eng­lish file can be found here:
The Na’­vi (Goo­g­le­Docs) | The Na’­vi (.PDF)
The trans­la­ti­ons, by kind per­mis­si­on of Karyu Ney­ti­ri, were done by the fol­lo­wing contributors:
Eng­lish: Karyu Neytiri
Ger­man / Deutsch: EanaUnil

Sources of infor­ma­ti­on: The AVATAR moving pic­tures and comics; Pan­do­rape­dia; James Cameron’s Ava­tar Wiki; ASG; The World of Ava­tar: A Visu­al Explo­ra­ti­on; Ava­tar: The Way of Water: The Visu­al Dic­tion­a­ry; The Art of Ava­tar: The Way of Water; Toruk – The First Flight (records on richasi.com); Na’viteri; Ava­tar You­Tube vide­os (1, 2); Ava­tar: Fron­tiers of Pan­do­ra.

Image sources: Ava­tar; Weta Work­shop; Ava­tar: The Game; Ava­tar: Pan­do­ra Rising; Ava­tar: Fron­tiers of Pan­do­ra; Pan­do­ra – The World of Ava­tar; Toruk – The First Flight; The World of Ava­tar: A Visu­al Explo­ra­ti­on; Ava­tar: The Way of Water: The Visu­al Dic­tion­a­ry; The Art of Ava­tar: The Way of Water; Ava­tar: Tsu’tey’s Path; Ava­tar: The Next Shadow; ATWoW Design Pre­sen­ta­ti­on; Ava­tar: Fron­tiers of Pandora.

Artists: Dylan Cole, Ryan Church, Seth Eng­strom, Ste­ven Mes­sing, Craig Sho­ji, Daph­ne Yap, Chris­ti­an Pear­ce, Josh Hood, Wes Dzio­ba, Rafa­el Kowalski.