AY, Z. S. Et Al. 2009. Seventh Grade Students Conceptual and Procedural Knowledge About Ratio and Proportion. IADIS International Conference on Cognition and Exploratory Learning in Digital Age CELDA 2009 , (Roma, Italy).

AY, Z. S., ÖZYILDIRIM GÜMÜŞ, F., Akkuş İspir, O., İpek, S., & AYGÜN, B., (2009). Seventh Grade Students Conceptual and Procedural Knowledge About Ratio and Proportion . IADIS International Conference on Cognition and Exploratory Learning in Digital Age CELDA 2009, Roma, Italy

AY, ZEYNEP Et Al. "Seventh Grade Students Conceptual and Procedural Knowledge About Ratio and Proportion," IADIS International Conference on Cognition and Exploratory Learning in Digital Age CELDA 2009, Roma, Italy, 2009

AY, ZEYNEP S. Et Al. "Seventh Grade Students Conceptual and Procedural Knowledge About Ratio and Proportion." IADIS International Conference on Cognition and Exploratory Learning in Digital Age CELDA 2009 , Roma, Italy, 2009

AY, Z. S. Et Al. (2009) . "Seventh Grade Students Conceptual and Procedural Knowledge About Ratio and Proportion." IADIS International Conference on Cognition and Exploratory Learning in Digital Age CELDA 2009 , Roma, Italy.

@conferencepaper{conferencepaper, author={ZEYNEP SONAY AY Et Al. }, title={Seventh Grade Students Conceptual and Procedural Knowledge About Ratio and Proportion}, congress name={IADIS International Conference on Cognition and Exploratory Learning in Digital Age CELDA 2009}, city={Roma}, country={Italy}, year={2009}}