@book
{TN_libero_mab2,
author = {
Friedenthal, Richard
AND
Leonardo da Vinci
},
title = {
Leonardo
eine Bildbiographie
},
publisher = {Kindler},
year = {1959},
booktitle = {Kindlers klassische Bildbiographien},
address = {
München
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}