Harrison, I. (2004). The book of inventions: How'd they come up with that? National Geographic Society.
Chicago Style (17. basım) AtıfHarrison, Ian. The Book of Inventions: How'd They Come Up with That? Washington, D.C: National Geographic Society, 2004.
MLA (9th ed.) AtıfHarrison, Ian. The Book of Inventions: How'd They Come Up with That? National Geographic Society, 2004.
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