APA Style
How It Works : The Illustrated Encyclopedia of Invention, Science and Technology Volume 20. ().
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Chicago Style
How It Works : The Illustrated Encyclopedia of Invention, Science and Technology Volume 20.
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Text.
MLA Style
How It Works : The Illustrated Encyclopedia of Invention, Science and Technology Volume 20.
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Text.
Turabian Style
How It Works : The Illustrated Encyclopedia of Invention, Science and Technology Volume 20.
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Print.