Παραπομπή σε μορφή APA (7η εκδ.)

Καρκαζής, Γ. (2005). A comparative analysis of the geo-economic gravity systems of Europe and Turkey. Constantine Porhyrogenetus International Association.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Καρκαζής, Γιάννης. A Comparative Analysis of the Geo-economic Gravity Systems of Europe and Turkey. Chios: Constantine Porhyrogenetus International Association, 2005.

Παραπομπή σε μορφή MLA (9th εκδ.)

Καρκαζής, Γιάννης. A Comparative Analysis of the Geo-economic Gravity Systems of Europe and Turkey. Constantine Porhyrogenetus International Association, 2005.