Name	Info	Provider	Link
	subscription/membership/fee required	American Psychological Association	http://content.apa.org/journals/ort/59/3/430
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=2764076.ui
	subscription/membership/fee required	Wiley	https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0002-9432&date=1989&volume=59&issue=3&spage=430