Ancient Fire: An Introduction to Gaulish Celtic Polytheism by Segomâros Widugeni (Author), Manny Tejeda-Moreno (Editor) – https://www.amazon.com/Anceint-Fire-Introduction-Gaulish-Polytheism/dp/0988900920/ref=sr_1_1?ie=UTF8&qid=1535120041&sr=8-1&keywords=ancient+fires+segomâros
Gods & Goddesses
CHAPTER III. THE GODS OF GAUL AND THE CONTINENTAL CELTS from The Religion of the Ancient Celts by J.A. MacCulloch – http://www.sacred-texts.com/neu/celt/rac/rac06.htm
Celtic Gauls-Gods Rites & Sanctuaries 1st Edition by Jean-Louis Brunaux – https://www.amazon.com/Celtic-Gauls-Gods-Rites-Sanct-S7/dp/185264009X
The Integration of Mercury and Lugus: Myth and History in Late Iron Age and Early Roman Gaul, Volume 2 by Krista L. Ovist – https://books.google.com/books/about/The_Integration_of_Mercury_and_Lugus.html?id=YOScSwAACAAJ
“Greek Κελτος and Γαλατις, Latin Gallus ‘Gaul’” by Kim McCone – http://polytheist.com/segomaros/2015/02/18/uoxtlos-ambi-keltus-galatisc-a-word-about-the-celts-and-gauls/
Mythology
Goddesses in Celtic Religion: Cult and Mythology: A comparative study of Ancient Ireland, Britain, and Gaul by Noémi Beck. – http://theses.univ-lyon2.fr/documents/lyon2/2009/beck_n#p=0&a=title
Language Studies
La Langue Gauloise by Pierre-Yves Lambert – http://www.cndp.fr/archive-musagora/gaulois/fichiers/langue_gauloise.htm
Online Resources
Gaulish Polytheism Community – https://www.facebook.com/groups/162531797160858/