@article{CANSIZ_AKTAŞ2012_133927,
author={Meral CANSIZ AKTAŞ and Devrim Yaşar AKTAŞ},
title={Eighth grade students’ understanding and hierarchical classification of quadrilaterals},
year={2012},
journal={İlköğretim Online (elektronik)},
issn={1305-3515},
volume={11},
number={3},
url={http://search/yayin/detay/133927}
}