@article{ref1,
title="Risk-taking by reward-seeking, punishment-avoiding, or mixed-orientation retardates",
journal="American journal of mental deficiency",
year="1968",
author="McManis, D. L. and Bell, D. R.",
volume="73",
number="2",
pages="267-272",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9351",
doi="",
url="http://dx.doi.org/"
}