@article{ref1,
title="Early adolescent alcohol consumption and self-concept, social class and knowledge of alcohol",
journal="Journal of studies on alcohol",
year="1982",
author="Butler, J. T.",
volume="43",
number="5",
pages="603-607",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0096-882X",
doi="",
url="http://dx.doi.org/"
}