@book
{TN_libero_mab2,
author = {
Müller-Freienfels, Richard
},
title = {
Gedächtnis- und Geistesschulung
},
edition = {
5. Aufl.
}
,
publisher = {Siemens-Verl.},
year = {1954},
booktitle = {Siemens-Lehrgang},
address = {
Bad Homburg v.d.H.
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}