Geographic, N. (2009). Planeta Terra 2008. National Geographic.
Chicagoスタイル(17版)引用形式Geographic, National. Planeta Terra 2008. National Geographic, 2009.
MLA(8版)引用形式Geographic, National. Planeta Terra 2008. National Geographic, 2009.
警告: この引用は必ずしも正確ではありません.