@book{
title = {L' Europe feodale },
author = {Lavisse, Ernest},
editor = {Rambaud, Alfred Nicolas},
editor = {998068103108896 - Histoire generale du 4. siecle a nos jours - 2 -  },
year = {1925},
edition = {3. ed},
address = {Paris },
publisher = {Librairie Armand Colin},
}