@book {9783862004263, 
	title = "How to Develop Your Personal Mission Statement",
	author = "Covey, Stephen R.",
	isbn = "9783862004263",
	year = "2010",
	edition = "1",
	keywords = "Persönlichkeit, Führung, Erfolg, Management, Effektivität, Ziele, Leitbild, Charakter, Prinzipien",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783862004263",
	url = "https://content-select.com/de/portal/media/view/562a015e-0b3c-44ab-af8a-191fb0dd2d03",
	publisher = "GABAL",
	language = "eng",
}