GÜVEN, B. And OKUMUŞ, S. 2011. 8th grade Turkish students’ Van Hiele levels and classification of quadrilaterals. 35th Conference of the International Group for the Psychology of Mathematics Education , (Ankara, Turkey), 473-480.

GÜVEN, B., & OKUMUŞ, S., (2011). 8th grade Turkish students’ Van Hiele levels and classification of quadrilaterals . 35th Conference of the International Group for the Psychology of Mathematics Education (pp.473-480). Ankara, Turkey

GÜVEN, BÜLENT, And SAMET OKUMUŞ. "8th grade Turkish students’ Van Hiele levels and classification of quadrilaterals," 35th Conference of the International Group for the Psychology of Mathematics Education, Ankara, Turkey, 2011

GÜVEN, BÜLENT And OKUMUŞ, SAMET. "8th grade Turkish students’ Van Hiele levels and classification of quadrilaterals." 35th Conference of the International Group for the Psychology of Mathematics Education , Ankara, Turkey, pp.473-480, 2011

GÜVEN, B. And OKUMUŞ, S. (2011) . "8th grade Turkish students’ Van Hiele levels and classification of quadrilaterals." 35th Conference of the International Group for the Psychology of Mathematics Education , Ankara, Turkey, pp.473-480.

@conferencepaper{conferencepaper, author={BÜLENT GÜVEN And author={SAMET OKUMUŞ}, title={8th grade Turkish students’ Van Hiele levels and classification of quadrilaterals}, congress name={35th Conference of the International Group for the Psychology of Mathematics Education}, city={Ankara}, country={Turkey}, year={2011}, pages={473-480} }