@book{
title = {50 Workouts für starke Bauchmuskeln },
author = {Tschirner, Thorsten <1971->},
editor = {riva Verlag},
editor = {Media:ohne Hilfsmittel zu benutzen },
year = {2022},
edition = {Originalausgabe, 1. Auflage},
address = {München },
publisher = {riva},
}