Celtiberiaid: Gwahaniaeth rhwng fersiynau

* Barry Cunliffe, 'Iberia and the Celtiberians' inyn "The Ancient Celts" (Penguin Books, 1997), ISBN 0-14-025422-6* J. P. Mallory, ''In Search of the Indo-Europeans'' (Thames & Hudson, 1989), ISBN 0-500-05052-X

*Alberto J. Lorrio anda Gonzalo Ruiz Zapatero, "The Celts in Iberia: An Overview" inyn ''[http://www.uwm.edu/Dept/celtic/ekeltoi/volumes/vol6/6_4/lorrio_zapatero_6_4.html e-Keltoi'' '''6''']