@book{2020:engert:anleitung_,
title = {Anleitung zur Einkommensteuererklärung 2020},
year = {2020},
note = {},
edition = {1},
publisher = {Schäffer-Poeschel},
address = {Stuttgart},
series = {},
volume = {},
author = {Engert, Robert and Simon, Winfried and Ulbrich, Frank}
}