Sandir, H. Et Al. 2007. 9(th) grade students' difficulties in arithmatic operations, ordering numbers, solving equations and inequalities. HACETTEPE UNIVERSITESI EGITIM FAKULTESI DERGISI-HACETTEPE UNIVERSITY JOURNAL OF EDUCATION , no.32 , 274-281.

Sandir, H., UBUZ, B., & Arguen, Z., (2007). 9(th) grade students' difficulties in arithmatic operations, ordering numbers, solving equations and inequalities. HACETTEPE UNIVERSITESI EGITIM FAKULTESI DERGISI-HACETTEPE UNIVERSITY JOURNAL OF EDUCATION , no.32, 274-281.

Sandir, Hakan, BEHİYE UBUZ, And Ziya Arguen. "9(th) grade students' difficulties in arithmatic operations, ordering numbers, solving equations and inequalities," HACETTEPE UNIVERSITESI EGITIM FAKULTESI DERGISI-HACETTEPE UNIVERSITY JOURNAL OF EDUCATION , no.32, 274-281, 2007

Sandir, Hakan Et Al. "9(th) grade students' difficulties in arithmatic operations, ordering numbers, solving equations and inequalities." HACETTEPE UNIVERSITESI EGITIM FAKULTESI DERGISI-HACETTEPE UNIVERSITY JOURNAL OF EDUCATION , no.32, pp.274-281, 2007

Sandir, H. UBUZ, B. And Arguen, Z. (2007) . "9(th) grade students' difficulties in arithmatic operations, ordering numbers, solving equations and inequalities." HACETTEPE UNIVERSITESI EGITIM FAKULTESI DERGISI-HACETTEPE UNIVERSITY JOURNAL OF EDUCATION , no.32, pp.274-281.

@article{article, author={Hakan Sandir Et Al. }, title={9(th) grade students' difficulties in arithmatic operations, ordering numbers, solving equations and inequalities}, journal={HACETTEPE UNIVERSITESI EGITIM FAKULTESI DERGISI-HACETTEPE UNIVERSITY JOURNAL OF EDUCATION}, year=2007, pages={274-281} }