Sezgin Memnun, D. And HACIÖMEROĞLU, G. A Research on pre-service elementary mathematics teachers’ opinions about mathematical problem solving. 2013. In The Science and Education at The Beginning of The 21st Century , St. Kliment Ohridski University Press, Sofia, 295-309.

Sezgin Memnun, D., & HACIÖMEROĞLU, G., (2013). A Research on pre-service elementary mathematics teachers’ opinions about mathematical problem solving. The Science and Education at The Beginning of The 21st Century (pp.295-309), Sofia: St. Kliment Ohridski University Press.

Sezgin Memnun, Dilek, And GÜNEY HACIÖMEROĞLU. "A Research on pre-service elementary mathematics teachers’ opinions about mathematical problem solving." In The Science and Education at The Beginning of The 21st Century , 295-309. Sofia: St. Kliment Ohridski University Press, 2013

Sezgin Memnun, Dilek S. And HACIÖMEROĞLU, GÜNEY. "A Research on pre-service elementary mathematics teachers’ opinions about mathematical problem solving." The Science and Education at The Beginning of The 21st Century , St. Kliment Ohridski University Press, 2013, pp.295-309.

Sezgin Memnun, D. And HACIÖMEROĞLU, G. (2013) "A Research on pre-service elementary mathematics teachers’ opinions about mathematical problem solving", The Science and Education at The Beginning of The 21st Century . Sofia: St. Kliment Ohridski University Press.

@bookchapter{bookchapter, author ={Dilek Sezgin Memnun And author ={GÜNEY HACIÖMEROĞLU}, chaptertitle={A Research on pre-service elementary mathematics teachers’ opinions about mathematical problem solving}, booktitle={ The Science and Education at The Beginning of The 21st Century}, publisher={St. Kliment Ohridski University Press}, city={Sofia},year={2013} }