↑Colera, Jordán (2007). p. 750. In the northwest of the Iberian Peninsula, and more specifically between the west and north Atlantic coasts and an imaginary line running north-south and linking Oviedo and Merida, there is a corpus of Latin inscriptions with particular characteristics of its own. This corpus contains some linguistic features that are clearly Celtic and others that in our opinion are not Celtic. The former we shall group, for the moment, under the label northwestern Hispano-Celtic. The latter are the same features found in well-documented contemporary inscriptions in the region occupied by the Lusitanians, and therefore belonging to the variety known as LUSITANIAN, or more broadly as GALLO-LUSITANIAN. As we have already said, we do not consider this variety to belong to the Celtic language family.{{cite book}}: |title= ไม่มีหรือว่างเปล่า (help)
↑Prósper, B.M. (2005). "Estudios sobre la fonética y la morfología de la lengua celtibérica" [Studies on the phonetics and morphology of the Celtiberian language]. ใน Villar Liebana, Francisco; Prósper, B.M. (บ.ก.). Vascos, celtas e indoeuropeos. Genes y lenguas [Basques, Celts and Indo-Europeans. Genes and languages] (ภาษาสเปน). Ediciones Universidad de Salamanca. pp. 333–350. ISBN84-7800-530-7.
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