Παραπομπή σε μορφή APA (7η εκδ.)

Williams, V. (2001). Parliamentary codes of conduct in Europe: An overview. European Centre for Parliamentary Research and Documentation.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Williams, Veronica. Parliamentary Codes of Conduct in Europe: An Overview. Brussels: European Centre for Parliamentary Research and Documentation, 2001.

Παραπομπή σε μορφή MLA (8th εκδ.)

Williams, Veronica. Parliamentary Codes of Conduct in Europe: An Overview. European Centre for Parliamentary Research and Documentation, 2001.