@book{143638,
	author = {Campbell, David. and ebrary, Inc.},
	title = {Perspectives on supervision},
	publisher = {Karnac,},
	year = {2002.},
	series = {Systemic thinking and practice series},
	address = {London :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10428109}
}