Öner, M. And Olcay, A. Coal Liquefaction. 1994. In Coal Resources Properties Utilization Pollution , Nadir Kitap, İstanbul, 379-396.

Öner, M., & Olcay, A., (1994). Coal Liquefaction. Coal Resources Properties Utilization Pollution (pp.379-396), İstanbul: Nadir Kitap.

Öner, Mualla, And Aral Olcay. "Coal Liquefaction." In Coal Resources Properties Utilization Pollution , 379-396. İstanbul: Nadir Kitap, 1994

Öner, Mualla And Olcay, Aral. "Coal Liquefaction." Coal Resources Properties Utilization Pollution , Nadir Kitap, 1994, pp.379-396.

Öner, M. And Olcay, A. (1994) "Coal Liquefaction", Coal Resources Properties Utilization Pollution . İstanbul: Nadir Kitap.

@bookchapter{bookchapter, author ={Mualla ÖNER And author ={Aral Olcay}, chaptertitle={Coal Liquefaction}, booktitle={ Coal Resources Properties Utilization Pollution}, publisher={Nadir Kitap}, city={İstanbul},year={1994} }