Παραπομπή σε μορφή APA (7η εκδ.)

Hardy, S. (1995). An enlarged Europe: Regions in competition? Jessica Kingsley, Regional Studies Association.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hardy, Sally. An Enlarged Europe: Regions in Competition? London: Jessica Kingsley, Regional Studies Association, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

Hardy, Sally. An Enlarged Europe: Regions in Competition? Jessica Kingsley, Regional Studies Association, 1995.