@book
{TN_libero_mab2,
author = {
Kennedy, Robert M.
},
title = {
The German campaign in Poland
1939
},
publisher = {Department of the Army},
year = {1956},
booktitle = {Pamphlet / Department of the Army ; 20-255},
address = {
Washington, D.C.
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}