@book {9783955713102, 
	title = "Coaching for Performance",
	author = "Whitmore, John",
	isbn = "9783955713102",
	year = "2014",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783955713102",
	url = "https://content-select.com/de/portal/media/view/5a86cc8d-7a70-4334-8dcf-649fb0dd2d03",
	publisher = "Junfermann Verlag",
	language = "ger",
}