Παραπομπή σε μορφή APA (7η εκδ.)

Mettwally , A. E. O. (1970). Regional Aspects of the U.A.R's Economic Development: Thesis of PhD. Netherlands School of Economics.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Mettwally , Abo-Bakr E. O. Regional Aspects of the U.A.R's Economic Development: Thesis of PhD. Rotterdam: Netherlands School of Economics, 1970.

Παραπομπή σε μορφή MLA (9th εκδ.)

Mettwally , Abo-Bakr E. O. Regional Aspects of the U.A.R's Economic Development: Thesis of PhD. Netherlands School of Economics, 1970.