@article{ref1,
title="The role of the trades unions",
journal="Royal Society of Health journal",
year="1977",
author="Black, Anne",
volume="97",
number="6",
pages="249-251",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0035-9130",
doi="",
url="http://dx.doi.org/"
}