@article{ref1,
title="Outerdirectedness and imitative behavior of institutionalized and noninstitutionalized younger and older children",
journal="Child development",
year="1972",
author="Zigler, E. and Yando, R.",
volume="43",
number="2",
pages="413-425",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0009-3920",
doi="",
url="http://dx.doi.org/"
}