@book
{TN_libero_mab2,
author = {
},
title = {
Harvard guide to American history
2
},
edition = {
2. print.
}
,
publisher = {Belknap Press of Harvard Univ. Press},
year = {1975},
address = {
Cambridge, Mass.
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}