@book{2023:happich:clevel_i,
title = {C-Level: Im Top-Management erfolgreich werden, sein und bleiben},
year = {2023},
note = {},
edition = {},
publisher = {Haufe Lexware},
address = {Freiburg},
series = {Haufe Fachbuch},
volume = {},
author = {Happich, Gudrun}
}