@book {9783749503193, 
	title = "The Negative Thoughts Workbook.",
	author = "Clark, David A.",
	isbn = "9783749503193",
	year = "2022",
	edition = "1",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783749503193",
	url = "https://content-select.com/de/portal/media/view/63bd0d1b-9258-4eb3-8ff5-4742ac1b0004",
	publisher = "Junfermann Verlag",
	language = "ger",
}