@article{ref1,
title="Behavior contracting with youthful offenders and their parents",
journal="Child welfare",
year="1977",
author="Douds, A. F. and Collingwood, T. R. and Engelsgjerd, M.",
volume="56",
number="6",
pages="409-417",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0009-4021",
doi="",
url="http://dx.doi.org/"
}