Duchy of Spoleto (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Duchy of Spoleto" in English language version.

refsWebsite

Global rank English rank

2books.google.com

3^rd place

3^rd place

books.google.com

Penny Cyclopaedia (1842), p. 368. The Penny Cyclopaedia of the Society for the Diffusion of Useful Knowledge: Sigonio - Steam-Vessel. Knight. 1842.
McKitterick (1995), p. 311. McKitterick, Rosamond (1995-09-14). The New Cambridge Medieval History: Volume 2, C.700-c.900. Cambridge University Press. ISBN 9780521362924.