Turkoglu, O. Et Al. 2009. On pre-service science teachers' preexisting knowledge levels about basic astronomy concepts. International Journal of Physical Sciences , vol.4, no.11 , 734-739.

Turkoglu, O., Ornek, F., Gokdere, M., Suleymanoglu, N., & Orbay, M., (2009). On pre-service science teachers' preexisting knowledge levels about basic astronomy concepts. International Journal of Physical Sciences , vol.4, no.11, 734-739.

Turkoglu, O. Et Al. "On pre-service science teachers' preexisting knowledge levels about basic astronomy concepts," International Journal of Physical Sciences , vol.4, no.11, 734-739, 2009

Turkoglu, O. Et Al. "On pre-service science teachers' preexisting knowledge levels about basic astronomy concepts." International Journal of Physical Sciences , vol.4, no.11, pp.734-739, 2009

Turkoglu, O. Et Al. (2009) . "On pre-service science teachers' preexisting knowledge levels about basic astronomy concepts." International Journal of Physical Sciences , vol.4, no.11, pp.734-739.

@article{article, author={O. Turkoglu Et Al. }, title={On pre-service science teachers' preexisting knowledge levels about basic astronomy concepts}, journal={International Journal of Physical Sciences}, year=2009, pages={734-739} }