Giles, B. (2006). National Geographic Countries of the World: Kenya. National Geographic.
Chicagoスタイル(17版)引用形式Giles, Bridget. National Geographic Countries of the World: Kenya. Washington D.C: National Geographic, 2006.
MLA(9版)引用形式Giles, Bridget. National Geographic Countries of the World: Kenya. National Geographic, 2006.
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