Duyar, İ. 2003. Demography , pp.211-212.

Duyar, İ., (2003). Demography.

Duyar, İzzet. Demography, Bilim ve Sanat Kitabevi, 2003

Duyar, İzzet. "Demography." Bilim ve Sanat Kitabevi, 2003.

Duyar, İ. 2003. "Demography." , Bilim ve Sanat Kitabevi, pp.211-212.

@encyclopedia{encyclopedia, author={İzzet DUYAR}, title={Demography}, publisher={Bilim ve Sanat Kitabevi}, pages={211-212} }