ÇELEBİ, N. Et Al. Opinions of Primary and Secondary School Teachers about School Principals’Efficacy. 2016. In Developments in Educational Sciences , ST. KLIMENT OHRIDSKI UNIVERSITY PRESS, Sofija, 257-270.

ÇELEBİ, N., SELÇUK, G., & YILDIRIM, R., (2016). Opinions of Primary and Secondary School Teachers about School Principals’Efficacy. Developments in Educational Sciences (pp.257-270), Sofija: ST. KLIMENT OHRIDSKI UNIVERSITY PRESS.

ÇELEBİ, NURHAYAT, GÜLENAZ SELÇUK, And REMZİ YILDIRIM. "Opinions of Primary and Secondary School Teachers about School Principals’Efficacy." In Developments in Educational Sciences , 257-270. Sofija: ST. KLIMENT OHRIDSKI UNIVERSITY PRESS, 2016

ÇELEBİ, NURHAYAT Et Al. "Opinions of Primary and Secondary School Teachers about School Principals’Efficacy." Developments in Educational Sciences , ST. KLIMENT OHRIDSKI UNIVERSITY PRESS, 2016, pp.257-270.

ÇELEBİ, N. SELÇUK, G. And YILDIRIM, R. (2016) "Opinions of Primary and Secondary School Teachers about School Principals’Efficacy", Developments in Educational Sciences . Sofija: ST. KLIMENT OHRIDSKI UNIVERSITY PRESS.

@bookchapter{bookchapter, author ={NURHAYAT ÇELEBİ Et Al. }, chaptertitle={Opinions of Primary and Secondary School Teachers about School Principals’Efficacy}, booktitle={ Developments in Educational Sciences}, publisher={ST. KLIMENT OHRIDSKI UNIVERSITY PRESS}, city={Sofija},year={2016} }