@article{ref1,
title="Use of adult responses to codify children's behavior in a play situation",
journal="Perceptual and motor skills",
year="1965",
author="Guerney, Bernard and Burton, Jean and Silverberg, Dana and Shapiro, Ellen",
volume="20",
number="2",
pages="614-616",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0031-5125",
doi="10.2466/pms.1965.20.2.614",
url="http://dx.doi.org/10.2466/pms.1965.20.2.614"
}