Europe
N.K. Sandars, Prehistoric Art in Europe (Pelican/Yale 1995)
D.W. Harding, Prehistoric Europe (Elsevier/Phaidon 1978)
R. and V. Megaw, Celtic Art (T&H, 1989, 2001)
The Celts (ed. S. Moscati et al., Milan 1991)
Ancient Gold. The Wealth of the Thracians (ed. I Marazov, New York, 1998)
O.-H. Frey, Die Entstehung der Situlenkunst (1969)