County of Apulia and Calabria (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "County of Apulia and Calabria" in English language version.

refsWebsite

Global rank English rank

3^rd place

182^nd place

981^st place

books.google.com

Loud, Graham (10 July 2014). The Age of Robert Guiscard: Southern Italy and the Northern Conquest. Routledge. ISBN 978-1-317-90022-1 – via Google Books.
Houben, Hubert (4 April 2002). Roger II of Sicily: A Ruler Between East and West. Cambridge University Press. ISBN 978-0-521-65573-6 – via Google Books.
Nicola Lafortuna (1881). I duchi di Calabria dal 969 al 1154. A. Norcia. pp. 57–63.

Enciclopedia Italiana (1933). Michelangelo Schipa (ed.). "GUAIMARIO V, principe di Salerno" (in Italian).