Παραπομπή σε μορφή APA (7η εκδ.)

O'Mahony, M., & van Ark, B. (2003). EU productivity and competitiveness: An industry perspective. Office for Official Publications of the European Communities.

Παραπομπή σε μορφή Chicago (17η εκδ.)

O'Mahony, Mary, και Bart van Ark. EU Productivity and Competitiveness: An Industry Perspective. Luxembourg: Office for Official Publications of the European Communities, 2003.

Παραπομπή σε μορφή MLA (8th εκδ.)

O'Mahony, Mary, και Bart van Ark. EU Productivity and Competitiveness: An Industry Perspective. Office for Official Publications of the European Communities, 2003.