@book
{TN_libero_mab2,
author = {
Steinman, David B.
},
title = {
The builders of the bridge
the story of John Roebling and his son
},
publisher = {Harcourt, Brace},
year = {1945},
address = {
New York
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}