@article{ref1,
title="Constraining effects of personal costs on the transgressions of juveniles",
journal="Journal of personality and social psychology",
year="1968",
author="Piliavin, I. M. and Hardyck, J. A. and Vadum, A. C.",
volume="10",
number="3",
pages="227-231",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-3514",
doi="",
url="http://dx.doi.org/"
}