Παραπομπή σε μορφή APA (7η εκδ.)

JONATHAN, G. (2015). History beckons: A collection of speeches, volume II. Office of the Special Adviser to the President on Research, Documentation.

Παραπομπή σε μορφή Chicago (17η εκδ.)

JONATHAN, Goodluck. History Beckons: A Collection of Speeches, Volume II. Office of the Special Adviser to the President on Research, Documentation, 2015.

Παραπομπή σε μορφή MLA (9th εκδ.)

JONATHAN, Goodluck. History Beckons: A Collection of Speeches, Volume II. Office of the Special Adviser to the President on Research, Documentation, 2015.