@book
{TN_libero_mab2,
author = {
Gayer, Renate
AND
Ebert, Ruth
},
title = {
Excel-Führerschein
},
edition = {
2., überarb. u. erw. Aufl.
}
,
publisher = {Winkler},
isbn = {9783804546899},
isbn = {3804546897},
keywords = {
EXCEL
},
year = {2005},
address = {
Darmstadt
},
}