Ancient Europe: encyclopedia of the barbarian world, 8000 B. C. ― A. D. 1000 / edited by Peter Bogucki, Pam J. Crabtree. - New York [etc.] : Scribner's Sons : Detroit [etc.], The Gale Group, 2004 - Bogucki, P.; Crabtree, P. J. (Scribner's Sons The Gale Group, 2004)