APA(7版)引用形式
(2014). National Geographic: January - May 2014. National Geographic.
Chicagoスタイル(17版)引用形式
National Geographic: January - May 2014. Washington: National Geographic, 2014.
MLA(9版)引用形式
National Geographic: January - May 2014. National Geographic, 2014.
警告: この引用は必ずしも正確ではありません.