@article{ref1,
title="Relative centrality of playing position and leadership recruitment in team sports",
journal="Exercise and sport sciences reviews",
year="1978",
author="Loy, J. W. and Curtis, J. E. and Sage, J. N.",
volume="6",
number=" ",
pages="257-284",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0091-6331",
doi="",
url="http://dx.doi.org/"
}