APA
Books of comparisons: Of distance, sixe, area, volume, mass, wight, density, energy, temperature, time, speed and number throughout the universe. London:Penguin Books,1980: .
Chicago
Books of comparisons: Of distance, sixe, area, volume, mass, wight, density, energy, temperature, time, speed and number throughout the universe. London:Penguin Books,1980: .
Harvard
Books of comparisons: Of distance, sixe, area, volume, mass, wight, density, energy, temperature, time, speed and number throughout the universe. London:Penguin Books,1980: .
MLA
London:Penguin Books,1980: . .
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