Kaya, V. 2019. Abd al-Rahman al-Bistami , pp.1-5.

Kaya, V., (2019). Abd al-Rahman al-Bistami.

Kaya, Veysel. Abd al-Rahman al-Bistami, Springer, London/Berlin , 2019

Kaya, Veysel. "Abd al-Rahman al-Bistami." Springer, London/Berlin , 2019.

Kaya, V. 2019. "Abd al-Rahman al-Bistami." , Springer, London/Berlin , pp.1-5.

@encyclopedia{encyclopedia, author={Veysel KAYA}, title={Abd al-Rahman al-Bistami}, publisher={Springer, London/Berlin }, pages={1-5} }