@article{ref1,
title="The interaction of internal and external factors in producing psychopathology",
journal="Journal of child psychotherapy",
year="1967",
author="Holder, Alex",
volume="2",
number="1",
pages="80-80",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0075-417X",
doi="10.1080/00754176708259399",
url="http://dx.doi.org/10.1080/00754176708259399"
}