@article{ref1,
title="Self-concept and academic performance in Jamaican teenagers",
journal="Journal of social psychology",
year="1989",
author="Garzarelli, P. and Lester, David",
volume="129",
number="5",
pages="725-726",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0022-4545",
doi="",
url="http://dx.doi.org/"
}