tina was right before, just search on the internet.
this site
http://infocus.sl.nsw.gov.au/res/search.cfm is a thing by the state library of nsw. you can search for related material for change. Then they'll tell you what it is and try and sell it to you, but since they've told you the name of the article, you can sometimes get it free from the source. Otherwise, they only charge like $3.
I found a few suitable for mine (changing self) and searched on google, one source was a psych magazine and they had free archives so i got it for free.
So if you look around, there is stuff there !!