APA (7. basım) Alıntı

Ceyhan, A., & Gürsoy, H. (1979). Petrochemical industry in Turkey and Petkim petrochemical company.

Chicago Style (17. basım) Atıf

Ceyhan, Ayşe, ve Hikmet Gürsoy. Petrochemical Industry in Turkey and Petkim Petrochemical Company. Ankara, 1979.

MLA (9th ed.) Atıf

Ceyhan, Ayşe, ve Hikmet Gürsoy. Petrochemical Industry in Turkey and Petkim Petrochemical Company. 1979.