Baltacı and Coşkun
Arkan Sezgin and Baysal
Doğan and Saraçoğlu
Köseoğlu and Yıldız
Öztürk and Aksu
Sevinç Tuhanioğlu and Gizir
Tülin POLAT, Nilüfer TAPAN
(HAYEF: Journal of Education 2010; 7: 91-108)