@book {9783608204070, 
	title = "Jungen verstehen",
	author = "Hopf, Hans",
	isbn = "9783608204070",
	year = "2019",
	edition = "1",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783608204070",
	url = "https://content-select.com/de/portal/media/view/5c57ffc8-f9c4-4ae8-988e-339cb0dd2d03",
	publisher = "Klett-Cotta Verlag",
	language = "ger",
}