Obama, B. (2017). Words of President Barack Obama at the First Plenary Session of the Summit of the Americas.
Citazione stile Chigago Style (17a edizione)Obama, Barack. Words of President Barack Obama at the First Plenary Session of the Summit of the Americas. 2017.
Citatione MLA (9a ed.)Obama, Barack. Words of President Barack Obama at the First Plenary Session of the Summit of the Americas. 2017.
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