Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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