(2017). National geographic Agustus - November 2017. Kompas Gramedia.
Chicago Style (17th ed.) CitationNational Geographic Agustus - November 2017. Kompas Gramedia, 2017.
MLA引文National Geographic Agustus - November 2017. Kompas Gramedia, 2017.
警告：这些引文格式不一定是100％准确.