O'Donnell, D. (2015). G7 in figures: Summit of the G7 states in Elmau 2015. Statistisches Bundesamt.
Chicagoスタイル(17版)引用形式O'Donnell, Daniel. G7 in Figures: Summit of the G7 States in Elmau 2015. Wiesbaden: Statistisches Bundesamt, 2015.
MLA(8版)引用形式O'Donnell, Daniel. G7 in Figures: Summit of the G7 States in Elmau 2015. Statistisches Bundesamt, 2015.
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