O'Donnell, D. (2015). G7 in figures: Summit of the G7 states in Elmau 2015. Statistisches Bundesamt.
Cita Chicago (17th ed.)O'Donnell, Daniel. G7 in Figures: Summit of the G7 States in Elmau 2015. Wiesbaden: Statistisches Bundesamt, 2015.
Cita MLA (8th ed.)O'Donnell, Daniel. G7 in Figures: Summit of the G7 States in Elmau 2015. Statistisches Bundesamt, 2015.
Atenció: Aquestes cites poden no estar 100% correctes.