Παραπομπή σε μορφή APA (7η εκδ.)

Crystal, J. (1995). Oil and politics in the Gulf: Rulers and merchants in Kuwait and Qatar. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Crystal, Jill. Oil and Politics in the Gulf: Rulers and Merchants in Kuwait and Qatar. Cambridge: Cambridge University Press, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

Crystal, Jill. Oil and Politics in the Gulf: Rulers and Merchants in Kuwait and Qatar. Cambridge University Press, 1995.