APA Style
The World Book Encyclopedia Research Giude Index. ().
:
World Book..
Chicago Style
The World Book Encyclopedia Research Giude Index.
.
:
World Book.,
.
Text.
MLA Style
The World Book Encyclopedia Research Giude Index.
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:
World Book.,
.
Text.
Turabian Style
The World Book Encyclopedia Research Giude Index.
:
World Book.,
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Print.