ÖZGÜDENLİ, G. O. Gıyaseddin Keyhusrev I. 2018. In The Encyclopaedia of Islam, Three , Brill, Leiden-Boston, 53-55.

ÖZGÜDENLİ, G. O., (2018). Gıyaseddin Keyhusrev I. The Encyclopaedia of Islam, Three (pp.53-55), Leiden-Boston: Brill.

ÖZGÜDENLİ, GAZİ. "Gıyaseddin Keyhusrev I." In The Encyclopaedia of Islam, Three , 53-55. Leiden-Boston: Brill, 2018

ÖZGÜDENLİ, GAZİ O. . "Gıyaseddin Keyhusrev I." The Encyclopaedia of Islam, Three , Brill, 2018, pp.53-55.

ÖZGÜDENLİ, G. O. (2018) "Gıyaseddin Keyhusrev I", The Encyclopaedia of Islam, Three . Leiden-Boston: Brill.

@bookchapter{bookchapter, author ={GAZİ OSMAN ÖZGÜDENLİ}, chaptertitle={Gıyaseddin Keyhusrev I}, booktitle={ The Encyclopaedia of Islam, Three}, publisher={Brill}, city={Leiden-Boston},year={2018} }