@book{529,
	author = {Beucker, Julius and Schmidt, Wilhelm Heinrich},
	title = {Bezugsquellen-Buch},
	publisher = {O. Hammerschmidt},
	year = {1925},
	address = {Hagen i. W.},
	edition = {9. verm. Ausgabe},
	url = {https://d-nb.info/572377215/04}
}