(2018). National geographic Januari - April 2018. Kompas Gramedia.
Chicago Style (17th ed.) CitationNational Geographic Januari - April 2018. Kompas Gramedia, 2018.
MLA (8th ed.) CitationNational Geographic Januari - April 2018. Kompas Gramedia, 2018.
Warning: These citations may not always be 100% accurate.