(2017). National geographic Agustus - November 2017. Kompas Gramedia.
Chicagoスタイル(17版)引用形式National Geographic Agustus - November 2017. Kompas Gramedia, 2017.
MLA(8版)引用形式National Geographic Agustus - November 2017. Kompas Gramedia, 2017.
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